if you're vacuum pump springs a leak

swank · 01-28-2006, 04:08 PM

take a close look at where the oil's coming out. if it's at the red arrow, all your going to need is a new o-ring . found this out last night. i was losing 3-4 qts of oil in 2hrs drive time. got the seal/gasket/o-ring kit from cummins for 7 bucks and started taking things apart. when i separated the set-up at the red arrow (good place to start when everythings on the truck, only 2 bolts) i found that the o-ring was as brittle as hard candy. i took the vacuum pump completely off and investigated/cleaned it though. couldn't find where the seal would go on it, so i'm guessing it goes somewhere near the blue arrow. put the new o-ring on, bolted 'er back together and surprise! no more leak. soaked the underside with simple green for a while and then down to the car wash to get rid of the few GALLONS of oil under there. problem solved.

dave
pic here

__________________
93w350. twins.

truck pics

***UPNSMOKE*** · 01-30-2006, 06:33 AM

Yes The Seal Goes At The Blue Arrow. It Seals The P/s Pump Coupler

__________________

SILVER 2002 ETC 3500 4X4, EDGE COMP, 4" STAINLESS EXHAUST, SCHWITZER S300G, EDM STAGE 4 INJECTORS, BHAF ISSPRO PYRO, BOOST, FUEL PREASURE GAUGES, A-PILLAR POD, 13" CONV. SOUTH BEND CLUTCH

479.1HP/889.6TRQ
SHE ONLY SMOKES WHEN SHE DRINKS

swank · 01-30-2006, 09:52 AM

btw, here's the cummins part # for the "kit" (gasket, seal, o-ring) that should cost about $7.42 straight from cummins. $50 or so if you let mopar put their sticker over the cummins one on the EXACT SAME package.

4089742

__________________
93w350. twins.

truck pics

Paccool · 01-30-2006, 06:50 PM

Swank, Thanks to you and Tom for the info you have entered in the first gen tech section. All info is great, need more!

The only thing I would add on this one is to be careful when removing the seal from inside the vacumn pump housing. It (the housing) is aluminum and scores easy.

How do I know??? Don't ask!

__________________
Stan

93 D250, PDR Twins HX35&HT3B, 60+# boost,PDR stage 2 head w/o-rings, PDR Cam, modified VE Pump, piston style lift pump, modified 5" intake w/AFE, ATS ported manifold,DTT 89% converter, 4" RIP exhaust, modified tranny, EGT/boost/tranny/tach gauges, TPS removed, a little chrome under the hood. Mag-Hitec tranny and diff. covers. Rear sway bar. Line-x bed liner, after market seats. Front end rebuilt with new springs - 2 " taller now. Single stage Water/Meth system installed. Oversized intercooler installed 10/06, 3" IC lines.

"if you're not part of the solution, you're part of the problem"

swank · 01-30-2006, 09:15 PM

i heard about that, but didn't have to do it on mine.

__________________
93w350. twins.

truck pics

***R-N-R*** · 02-01-2006, 03:56 AM

Mine is seeping (slow drip) from the red arrow. Thanks for the info and the P/N!

__________________
'02 2500, 2WD, 4.10, QC LB Cap, Bilstein, Gauges
DTT, AFE, PDR Boots ARP, B1-2, MagnaFlow, GRAND ROCK, Drag Comp, Regulated Fuel Delivery, IIS HRVP, M4.5, HTT
28' 6500# Sunline TT, Hensley, Prodigy

01-28-2006, 04:08 PM	#1 (permalink)
swank Cummins Enthusiast Join Date: Dec 2005 Location: bellevue, id Posts: 251 swank's Truck Pics	if you're vacuum pump springs a leak take a close look at where the oil's coming out. if it's at the red arrow, all your going to need is a new o-ring . found this out last night. i was losing 3-4 qts of oil in 2hrs drive time. got the seal/gasket/o-ring kit from cummins for 7 bucks and started taking things apart. when i separated the set-up at the red arrow (good place to start when everythings on the truck, only 2 bolts) i found that the o-ring was as brittle as hard candy. i took the vacuum pump completely off and investigated/cleaned it though. couldn't find where the seal would go on it, so i'm guessing it goes somewhere near the blue arrow. put the new o-ring on, bolted 'er back together and surprise! no more leak. soaked the underside with simple green for a while and then down to the car wash to get rid of the few GALLONS of oil under there. problem solved. dave pic here __________________ 93w350. twins. truck pics

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01-30-2006, 06:33 AM	#2 (permalink)
*UPNSMOKE* Cummins Fanatic Join Date: Dec 2005 Location: ODESSA TX Posts: 169 UPNSMOKE's Truck Pics	Yes The Seal Goes At The Blue Arrow. It Seals The P/s Pump Coupler __________________ SILVER 2002 ETC 3500 4X4, EDGE COMP, 4" STAINLESS EXHAUST, SCHWITZER S300G, EDM STAGE 4 INJECTORS, BHAF ISSPRO PYRO, BOOST, FUEL PREASURE GAUGES, A-PILLAR POD, 13" CONV. SOUTH BEND CLUTCH 479.1HP/889.6TRQ SHE ONLY SMOKES WHEN SHE DRINKS

01-30-2006, 09:52 AM	#3 (permalink)
swank Cummins Enthusiast Join Date: Dec 2005 Location: bellevue, id Posts: 251 swank's Truck Pics	btw, here's the cummins part # for the "kit" (gasket, seal, o-ring) that should cost about $7.42 straight from cummins. $50 or so if you let mopar put their sticker over the cummins one on the EXACT SAME package. 4089742 __________________ 93w350. twins. truck pics

01-30-2006, 06:50 PM	#4 (permalink)
Paccool Admin Join Date: Nov 2005 Location: NorCal Posts: 2,072 Paccool's Truck Pics	Swank, Thanks to you and Tom for the info you have entered in the first gen tech section. All info is great, need more! The only thing I would add on this one is to be careful when removing the seal from inside the vacumn pump housing. It (the housing) is aluminum and scores easy. How do I know??? Don't ask! __________________ Stan 93 D250, PDR Twins HX35&HT3B, 60+# boost,PDR stage 2 head w/o-rings, PDR Cam, modified VE Pump, piston style lift pump, modified 5" intake w/AFE, ATS ported manifold,DTT 89% converter, 4" RIP exhaust, modified tranny, EGT/boost/tranny/tach gauges, TPS removed, a little chrome under the hood. Mag-Hitec tranny and diff. covers. Rear sway bar. Line-x bed liner, after market seats. Front end rebuilt with new springs - 2 " taller now. Single stage Water/Meth system installed. Oversized intercooler installed 10/06, 3" IC lines. "if you're not part of the solution, you're part of the problem"

01-30-2006, 09:15 PM	#5 (permalink)
swank Cummins Enthusiast Join Date: Dec 2005 Location: bellevue, id Posts: 251 swank's Truck Pics	i heard about that, but didn't have to do it on mine. __________________ 93w350. twins. truck pics

02-01-2006, 03:56 AM	#6 (permalink)
*R-N-R* Free spirit Join Date: Nov 2005 Location: Marysville, MI Posts: 2,871 R-N-R's Truck Pics	Mine is seeping (slow drip) from the red arrow. Thanks for the info and the P/N! __________________ '02 2500, 2WD, 4.10, QC LB Cap, Bilstein, Gauges DTT, AFE, PDR Boots ARP, B1-2, MagnaFlow, GRAND ROCK, Drag Comp, Regulated Fuel Delivery, IIS HRVP, M4.5, HTT 28' 6500# Sunline TT, Hensley, Prodigy