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10-23-2019, 04:48 AM
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#1 |
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Registered User
Join Date: Jun 2012
Location: crosby, tx
Posts: 114
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Give me your opinions
Pulling my nv4500 to have it rebuilt.. having the flywheel resurfaced at the same time(and pilot bearing replaced), what do ya'll think about doing preventive maintenance on the engine by replacing the rear main seal while I have the flywheel off? No, it's not currently leaking, but the motor has 200k on it.. rest of the motor is strong, just thinking about replacing an aged seal before it has a chance to go bad..
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10-23-2019, 07:11 AM
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#2 |
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State of Confusion!
  
Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 46,634
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Re: Give me your opinions
If it is leaking, any yeah, now would be a good time. If there is no leaks, don't worry about it. Is this a V6?
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Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
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10-23-2019, 07:26 AM
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#3 |
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Registered User
Join Date: Oct 2009
Location: .
Posts: 2,178
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Re: Give me your opinions
Yes yes yes. It'll be your luck it will start leaking 3 months after you put it back together if you leave the old one in there.
20+ year old oil seals don't last forever. |
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10-23-2019, 09:54 AM
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#4 |
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Special Order
 
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,863
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Re: Give me your opinions
I had two trucks with NV4500s. Anytime the engine and transmission got separated I replaced the rear main seal and transmission input seal AND bearing. That stuff will be new on your trans. But I kept a spare bearing and seal.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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10-24-2019, 06:42 PM
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#5 |
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driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,692
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Re: Give me your opinions
Of course replace it. You already did all the labor getting to it.
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-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. |
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10-28-2019, 09:44 AM
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#6 |
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Registered User
Join Date: Jun 2012
Location: crosby, tx
Posts: 114
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Re: Give me your opinions
Thanks guys.. getting the last of the needed parts today, and then the fun begins..
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11-08-2019, 01:27 PM
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#7 | |
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Registered User
Join Date: Nov 2011
Location: 19
Posts: 607
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Re: Give me your opinions
I am with the others, it's apart so replacing is easy enough, I would get quality seals though and Lisle makes a cool blind seal puller.
https://www.youtube.com/watch?v=YrVwf6BHLTw
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1999 Chevy K2500 RCLB 350 4L80e 2004 Chevy 3500 C&C Dmax Allison Quote:
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