Cummins pt fuel pump throttle shaft removal. Remove the fuel tubing and air tube: 4.

Cummins pt fuel pump throttle shaft removal. 6. He did all my pump work on my 903's last year. the throttle pedal will become stiff and remain stiff for about 5 minutes while my throttle has sticking fits for 5-7 seconds Jan 29, 2022 · The position of the governor plunger regulates the fuel flow through various governor plunger ports. I wouldn't attempt or even know if it is possible to do on the truck. (402) 755-2295. Mar 13, 2017 · Posted 3/13/2017 16:08 (#5896919 - in reply to #5896713) Subject: RE: Throttle shaft screw vs fuel button on 855 Cummins. Drill 2 small holes on opposite sides of the seal (I used a 1/16" bit I think) Use extreme caution not to drill into the shaft!! Cummins PT Fuel Pump Diagnostic . Fabricate a suitable bracket or mount the aneroid on fuel pump test stand. Fuel pump main shaft in turn drives the gear pump, governor and tachometer shaft assemblies. MAIN FLO A FUEL AN TANK FILTER PT PUMP INJEC ORS 3:z This document is a service manual produced by Jensales Inc. Would a leak at the throttle shaft seal cause it to suck in enough air to keep the truck from starting? Also what all is involved with replacing Sep 6, 2022 · In this industrial motor, I think what they are doing is locking the standard throttle control, and using a adjustable plunger controlled by your cable, controlling the fuel after the gov. Remove the throttle linkage from the throttle shaft. Not fuel pressure out of the pump. The gasket kit had an o-ring in it that goes on the throttle shaft and it cured my leek. Remove the four fuel pump mounting PT fuel pump calibration is not correct; PT fuel pump is not assembled correctly or has mismatched parts; Camshaft end clearance is excessive; Rough Run at Idle. Remove the rivets holding it in place. I was going to remove pt fuel pump to have rebuilt due to throttle shaft seals leaking is a big cam III thought it would be an easy removal, I cannot get a single fitting to turn on the pipes without twisting pipes, most are screwed into PDF: Cummins PT Pump installation Instructions Removal Inspection Installation Priming and Starting We repair, rebuild and test Cummins PT pumps. It discusses the structure and function of key fuel system components like injectors and the PT pump. I got a new shaft and decided i would try and fix it. Doing it now might save down time when a timely field operation might be critical for yield . Fill the housing with clean fuel oil. Well there are four allen scews that hold the top hat off the Sep 1, 2024 · North Central In. Disconnect the electrical wire to the fuel shutoff solenoid valve. If the gear pump gears do not turn, remove the fuel Jul 29, 2020 · Button increases flow into the pump. Unless you have the special tool that goes inside the middle of that cone, you have to remove those four bolts, and remove the cone( fuel will come out) theres an adjustment screw inside it, either turn it clockwise or the other way. Remove the linkage from the throttle lever. When investigating low power complaints, the document Apr 9, 2020 · -Remove intake manifold-Throttle shaft pin comes out with a punch and hammer-Use a pen or something to mark the position of the advance cam on the throttle shaft, then remember to not remove the mark with brake cleaner 🤦‍♂️-Throttle shaft advance cam bolt needs to come off completely Jul 30, 2014 · The fuel coming out is really foamy. Aug 12, 2012 · Noticed a leak today on the ve pump in my 92 w250 and pulled the throttle linkage plates off to find it was coming from the throttle shaft. Feb 10, 2015 · I have found that when a truck pump wears the throttle shaft seal starts leaking things are wore out internally as well. Apr 13, 2019 · I don't work on old stuff much, is the air compressor and fuel pump timed on a Big Cam Cummins with a PT pump? Also are the pumps interchangeable, say I have an NTC 400 will the pump work on a 350? I know nothing about these old engines and the service manual I have doesn't say much about the fuel system. and throttle shaft. Disconnect all control linkage. After the calibration, the fuel pump can be mounted on engine. I just used a fuel safe oring out of my assortment kit. olled period of time. Likewise, the mechanically operated throttle location determines the amount of fuel that can flow through the throttle shaft. Give me a call if you like and I'd be happy to talk to you to give you some pointers. 4. To increase rpm you must shim the gov. It's really not a bad job to remove the pump and do it. 7. Apr 22, 2022 · 1981 F350 97 12v, 47re with E-TransControl, Dodge Dana 60 with free spin hubs, Dana 70, B&M Mega shifter, DAP 5x12 VCO's, Water Methanol 96 F350 SC dually zf5, 4x4, 92 12v, THD 5x12's, THD fuel pin, THD HVLP with adjustable fuel pressure mod, WM, hx35 ( Sold ) fuel delivered from the PT pump. Clean the exterior of the injection pump and mounting surfaces. il be crusing down the highway at 70 and the engine sounds slightly off and the throttle will stick and slowly decelerate for about 5-7 seconds then free up. 3. North Central In. This could be caused by the fuel pump not turning or a seized gear pump. AFC air supply tube (5) 9. The manual covers components like the fuel pump housing, gear pump, shut down valves, governor spring pack, pressure regulator, and auxiliary equipment. Nov 8, 2017 · Fig. Edited by a4t-1600 2/9/2015 22:00. Cummins ST-848 Fuel Pump Test Stand must be equ ipped as follows: 1. 1986 M1008 Fuel filter mod, Electric lift pump. Feb 4, 2010 · The reciprocating mass should be the same as most 855 cummins , the old ntc 335s came from the factory governed to 2350, and 3406-92U cats were set at 2380 , valve train usually limits the rpm , not piston speed , of course you don't want to hold 2500 all day:happymugs. With the electric valve, the Apr 16, 2015 · In your first picture, where the fuel line right below that is that cone, top hat looking cover with 4 small bolts. And don't forget the fuel pin o-ring while you're in there. 1. Remove the fuel air control tube, if used. Also looks like a little fuel is leaking past the fuel pin as I see some in the bottom of the afc area when I pull the fuel pin out. Another problem is from not backing the fuel screw out before assembly. The summaries are: 1. assembly that replaces the PT pump actuator and can be installed on any Cummins engine with the optional BK114 mounting bracket. Not every unit but, the older ones that had badly adjusted throttles, were especially vulnerableback in the day, we sold more PT Fuel Pump throttle shaft seals to the pump room than ANY other part in the shop at this time! PT Fuel System FI-2 Cummins throttle shaft change FI-3 PT pump drive shaft seals FI-25 3063052 gasket, AFC vented front cover FI-43 Cummins front cover and main shaft seal FI-45 Cummins AFC tach plug and gear pump inlet adapters FI-53 Oil Manifold Seal Kit for Cummins N14 Sep 1, 2024 · I was going to remove pt fuel pump to have rebuilt due to throttle shaft seals leaking is a big cam III thought it would be an easy removal, I cannot get a single fitting to turn on the pipes without twisting pipes, most are screwed into brass fittings so they will come right loose but problem is the fitting are frozen to fuel lines, there is Oct 18, 2019 · NOTE: Apply the actuator rated battery voltage to the normally closed actuator when the fuel pump is calibrated. Cummins PT Fuel Pump Diagnostic . If the gear pump gears do not turn, remove the fuel Mar 24, 2007 · The correct way to increase your fuel is to remove the anti tamper ball that is fitted in the throttle shaft (the actual throttle shaft not the lever), it will either be a piece of lead or a ball bearing, if a ball bearing it's a bit more difficult to remove but it is made of mild steel unless some sick ***** fitted a proper ball bearing then your screwed, the overhaul kits for the PT pump The document discusses various checks and adjustments that may need to be performed on the PT fuel system of an engine as miles accumulate. Call Dennis @ DLDiesel, Ponca Nebraska. The document provides troubleshooting steps for various issues that may occur with a Cummins PT fuel pump, including no start, hard start, low power, surging, and smoking problems. The discharge fi tting of the PT fuel pump is connected to the inlet of the AD-B120E4 valve. seedcleaner Posted 8/10/2017 21:55 (#6179774 - in reply to #6178619) Subject: RE: Cummins throttle shaft seal Oct 11, 2017 · The PT fuel system consists of the fuel pump, supply lines, drain lines, fuel passages and injectors. Definition. Remove the pump support bracket. 12. It provides operating principles, disassembly/assembly instructions, and repair procedures for Cummins PT (type G) and PT (type R) fuel pumps. The new seal now has a fl at outside diameter instead of a concave one and has a much larger blend radius. It's a complete kit so while you've got the pump top off you might as well reseal the whole thing with new o-rings. These include adjusting idle speed, checking for fuel system restrictions and leaks, testing fuel rail pressure and fuel rate, adjusting throttle linkage, and checking turbocharger boost pressure. Removal . I've ordered the Bosch seal kit so hopefully it will be here in the next few days. The fuel pump is coupled to the fuel pump drive which is driven from the engine gear train. Cummins PT (Pressure/Time) fuel system. Where is the inlet for fuel on a cummins pt injector bottom or top hole? Cummins PT fuel pump. It comes in kit Bosch Part # DGK-121. Feb 22, 2012 · ETA: There is a seal on the throttle shaft. can this Feb 2, 2009 · The “button” (i. Gear pump cooling drain (2) 6. After that is removed you will see above the throttle shaft a an allen set screw with a hex head 7/16 nut locking it into place. The quick and dirty way for more fuel on a PT pump is drill out the plug in the throttle shaft and turn the slotted screw out 1/4 to 1/2 a turn. The guy who had it before me had somehow broke the throttle shaft coming out of the injection pump that your governor spring hooks to. LEANING INJECTORS: 1. So to remove the throttle shaft on a DB2 pump, in addition to removing the intake manifold and top cover, you have to remove the guide stud that holds the governor spring body in place Removal PDF: Bosch VE Injection Pump Installation, Cummins Lock Timed Clean the exterior of the injection pump and mounting surfaces. 864-978-0243. The throttle shaft must be locked in the full open position. The main features of the PT Stanadyne (Roosa Master) DB, JDB and older DB2 model injection pumps will have a non-retained drive shaft (shaft stays in engine when pump is removed) If the injection pump you have has a retained drive shaft (shaft stays in the pump when pump is removed from engine), see instructions for removal and installation of DB2 and DB4 pumps. Attention: With a manual valve, the control lever must be fully clockwise or open to permit fuel flow through the valve. It may look like it is hooked up, but it is backwards. The gear pump gears must turn. Jun 10, 2023 · 1. This will not increase rpm, only fuel rate. Cummins PT Pump Installation and Removal Instructions . He is one left of a dying breed of PT pump guys. If the priming plug is hard to remove or the fuel pump is a VS type, remove the fuel supply hose to the gear pump. Finally, fuel from the throttle shaft gets directed to the AFC needle valve. Fuel supply to the injectors (4) 8. . Remove the fuel pump if it is on the engine. Is there a hole in the shaft where the lock pin will go into so I can lock it? 2. Over the years, we have found engine serial numbers do not work for correctly identifying a PT pump. Jan 9, 2022 · This document provides an overview of the PT fuel system used in Cummins engines. 5. Sep 1, 2024 · Posted 9/1/2024 16:00 (#10874930) Subject: Removing fuel lines off NTC350 Cummins PT Pump. Normally, Read more » Gear pump cooling drain (2) 6. Fuel Pump. May 18, 2011 · Injection Pump Throttle Shaft Seal Replacement. I put the pump back in, primed all the lines, and wala it started but only at full throttle I moved the throttle lever arm both ways but that did not help. Cummins PT Fuel Pump Diagnostic No Start, with no smoke 1. Depending on the fuel pressure delivered from the PT pump, each injec­ tor meters the quantity of fuel and injects fuel into the cylinder. How to tell if I'm in the right spot. Refer to the OEM service manual . May 10, 2018 · Both cummins N and NH series diesel engines adopt PT fuel system, which has two types: pt-g Pump, system governor - controller, and pt-r pump, pressure - regulator. File: Cummins Fuel PT FUEL PUMP DRIVE SHAFT FOR CUMMINS FUEL PUMPS DIPACO now has a new drive shaft seal, part number D3062676, available for use with Cummins PT fuel pumps. Any change in the pressure, orifice or time, will affect the amount of fuel delivered to. The more fuel, the faster the “pop” time of the NOTE: If the fuel pump is dirty, clean the outside of the pump. There is a new lift pump and no fuel leaks before the injection pump anywhere. This seal replaces part number D3045173. You have to have enough flow to get the fuel into the upper IP to increase injector flow. Note: Do not remove the throttle lever. There's a whole series on youtube that truck shop posted up on the pt cummins injector pump and how it works. In the PT system fuel metering is a dual function of the pump which regulates fuel pressure and the injectors which permit the metering orifice to be uncovered for an accurately con. lb] torque. I have a case ih 9280 tractor with an 855 cummins engine. regulator plunger) acts as a pressure plunger, or regulator, just like the ones in an oil pump or fuel pump or whatever. Tachometer cable (if used) (6) 10. No Start, with no smoke . Back in the last century when I was working in a Cummins shop, we jury rigged a couple of fittings onto a clear tube and placed it between the pump outlet and the fuel line that supplied the fuel to the injectors, and another larger clear tube on the suction side of the pump. for Cummins fuel pumps and injectors. The throttle lever on the Bosch VE fuel injection pump is indexed to the shaft during pump calibration. The document is a training manual that explains the PT fuel system, including injectors, the PT pump, governors, and other components. Please domnt forget to rate/accept my service Apr 20, 2021 · pt PUMP repair testing Cummins PT Fuel Pump Diagnostic . The throttle lever on the Bosch VE fuel injection pump is indexed to the shaft during Nov 7, 2010 · Sounds like you have an air leak in the fuel system. CUSTOMER / OEM: CUMMINS Jan 10, 2022 · The position of the governor plunger regulates the fuel flow through various governor plunger ports. Remove the fuel supply hose and the fuel inlet fitting from the gear pump. A Cummins PT (pressure timed) pump relies on increasing pressure to feed more fuel at a faster rate to the injectors. He had it jb welded and it looked like crap but it worked. It lists potential causes such as a faulty fuel pump, restrictions in the fuel system, incorrect fuel settings, leaks in the air intake or exhaust systems, and problems with the injectors, turbocharger, or Aug 10, 2017 · Pump had to come off,bolts behind pump are fun and then took it to a pump place to replace shaft seal. What works best are the numbers off the pump nameplate, the CPL and HP & RPM. I was going to remove pt fuel pump to have rebuilt due to throttle shaft seals leaking is a big cam III thought it would be an easy removal, I cannot get a single fitting to turn on the pipes without twisting pipes, most are screwed into brass fittings so they will come right loose but problem is the fitting are frozen to fuel lines, there is hardly any rust on any of lines The only way to fix this this issue is to have the Fuel pump sent out to Cummins or a fuel pump shop They can replace the seal but more importantly go over the fuel pump and reseal and check pump operation overall, This will ensure the pumps reliability when rebuilt . I used the rebuild post in this forum. Check the gear pump while cranking the engine. A gear-driven positive displacement low-pressure fuel pump supplies fuel pressure. Jul 10, 2015 · If only your throttle shaft seal is leaking, it IS possible to carefully remove and re-install from the outside. Mar 11, 2008 · My pump was leaking around the throttle shaft a couple weeks ago, I ordered a gasket kit for the pump, and a 3200 rpm spring from( Source Automotive Performance Diesel)Source automotive, there in oregon but they can ship it to you. The shaft bolt increases pressure out of the pump to the engine that in turn puts pressure on the camshaft from the injector force increase. Apr 20, 2015 · Apr 20, 2015. Oct 26, 2013 · ever figure it out? im having trouble with my throttle sticking after about a half hour of highway driving. Gear pump suction line (3) 7. The Cummins PT fuel system can be standalone or include an Electronic Fuel Control (EFC) either as a Normally Open or Normally Closed system with its actuator integr ated in the PT pump, or it may use a mechanical / hydraulic governor . Remove the fuel tubing and air tube: 4. How do you remove the shaft seal so I can put some red Loctite on it and reinstall. Only charged me an hours labor and $5 seal. Around the throttle shaft will be a sheet metal cover. #4. Remove the plug from the top of the housing. Location. Owner of the truck before the last guy turned the throttle stop screw flush so no contact is to be had with the throttle lever. The dif is the way it works. GEAR PUMP. Engine idle speed is set too low; Air in the fuel system; Fuel pump pulsation damper is cracked; Fuel grade is not correct or the fuel quality is poor; If white smoke is present Installing Aneroids On Fuel Pump Test Stands Precision setting and/or checking of aneroids is accomplished by simulating engine operation on a fuel pump test stand. May 28, 2013 · A common problem during reassembling the pump is that the throttle shaft will turn around 180° making it inoperative. 897476 kPa), which can ensure good fuel May 7, 2010 · Well I replaced a couple of leaky "O" rings on my VE injector pump, I did not take the whole thing apart. I treat the constant power pumps the same way even though they don't have as many cycles on them. Remove the electrical wire to the fuel shutdown valve. Fuel drain line from the T-block connection (1) if equipped . e. Dec 14, 2022 · Features of Cummins Generator PT Fuel System. The outlet from the valve is connected to the fuel rail that leads to the injectors, inlet and outlet fi ttings are The pressure-time (PT) fuel system (Figure 1) is exclusive to Cummins diesel engines; it uses injectors that meter and inject the fuel with this metering based on a pressure-time principle. If the gear pump gears do not turn, remove the fuel pump. Just a bubble can do it. 11. Loosen the nut and back off the set screw 3 turns. If the lever has been removed and reinstalled incorrectly, engine Read more » Mar 6, 2019 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Feb 22, 2009 · Very easy to do. It department of the army technical manual tm 55-4018-1 department of the air force technical order to 38g1-6-21 cummins pt fuel system departments of the army and the air force Nov 3, 2006 · So there is no split in the middle like on off highway pumps, the automotive pumps also have a face cam on the throttle shaft, opposite the throttle lever. Throttle shaft. 2. Its sensitive enough that it only needs a teeny tiny amount of air to come through the seal to cause the headache you have. the throttle shaft seal on the pump is leaking. Remove the two fuel pump support bracket to cylinder block bracket mounting cap screws, if equipped. If the gear pump gears do not turn, remove the fuel Apr 22, 2015 · I bought a first gen two weeks ago. ORD 5" lift up front, 4" shackle flip out back, 35" Cooper STT Dec 8, 2017 · The throttle shaft seal can still suck air and not leak any fuel. spring under the bell cover, if you do this you won't want to back the throttle shaft screw out. 5–2, Fuel pump manual override knob. Jul 8, 2010 · The second lowering of sulphur did have a number of older Cummins, that had seal leakage, on the throttle shaft. Gear pump Feb 4, 2014 · Thanks for your help. The fuel does not be delivered to the cylinders flows from the injectors to the float tank through the return passage. Tighten the plug to 30 N•m [20 ft. The injection pressure range is as high as 10,000–20,000 PSI (PSI is pounds per square inch, about 6. Actuator Installation in an AFC Fuel Pump Housing. vvfouy ylgpn tehvlk elfbf zhjtd dwb rqwqv pdft xffa mnc