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6.5L Diesel Engine Discuss the 6.5 GM diesel engine & associated components. Automatic transmission questions & problems belong in the 4L80/85 - 4L60E - 6L90 Transmission Forum

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Old 01-10-2015, 12:03 AM   #11 (permalink)
bk95td
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Quote:
Originally Posted by quadstar87 View Post
Ds4 pump folks need to retime the motor when timing cover is moved. Why does the seal break when there are other bolts holding the cover on? I have torn them apart but never replaced on a running motor and resealed yet.
You were very lucky is all.
Gaskets on everything. A timing gasket set will have all the gaskets and a front main seal. Rtv is a leak waiting to happen on the timing covers.

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Old 01-10-2015, 02:04 AM   #12 (permalink)
turbovanman
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Quote:
Originally Posted by quadstar87 View Post
Ds4 pump folks need to retime the motor when timing cover is moved. Why does the seal break when there are other bolts holding the cover on? I have torn them apart but never replaced on a running motor and resealed yet.
Sometimes you get lucky. The factory uses Anerobic sealer which doesn't take much to break the seal. The bolts holding the tin cover are down lower so unbolting the water pump can break the seal. This is a common issue on Fords and other engines that the bolts go thru the water pump-timing cover. Again, sometimes you win, sometimes, not so much.

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Old 01-10-2015, 07:58 AM   #13 (permalink)
wallyworld
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Quote:
Originally Posted by turbovanman View Post
Reseal the timing cover, more work but you'll be sorry if you don't. You'll need a harmonic balancer remove and installer and you'll most likely have to remove the rad. Also, buy a new timing chain, reuse your sprockets.
Just to change a water pump you should reseal timing cover? That sucks I really don't want to do that. it won't change timing on IP if I take off cover will it? I don't see how but what do I know. How would I get crank bolt out? Some how you would have to jam crank so it can't turn or can I get it off with impact? probably should have let water pump leak This isn't much of an engine because the anti freeze has circulated thru it so I'm not changing timing chain unless its ready to break which I doubt. What do you need for a tool to reinstall harmonic balancer.?

I found this kit on amazon, is the crank bolt 16 mm with 2.0 pitch? Thats what this kit has in it


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Last edited by wallyworld; 01-10-2015 at 08:05 AM.
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Old 01-10-2015, 08:38 AM   #14 (permalink)
wallyworld
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Originally Posted by wallyworld View Post
Just to change a water pump you should reseal timing cover? That sucks I really don't want to do that. it won't change timing on IP if I take off cover will it? I don't see how but what do I know. How would I get crank bolt out? Some how you would have to jam crank so it can't turn or can I get it off with impact? probably should have let water pump leak This isn't much of an engine because the anti freeze has circulated thru it so I'm not changing timing chain unless its ready to break which I doubt. What do you need for a tool to reinstall harmonic balancer.?

I found this kit on amazon, is the crank bolt 16 mm with 2.0 pitch? Thats what this kit has in it
Amazon.com: OTC 4531 Harmonic Balancer Puller and Installer Set: Automotive
I think its this set as it has 16 by 1.5


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1995 3500 hd Automatic 30 ft versalift bucket
PMD relocation kit
Lubrication specialists cooler and lines
Kennedy OPS kit
Alligator 4" exhaust pending

Almost time for an 06 to 08 Teds Motor
Teds motor installed, new Motor mounts, new injectors
New glow plugs.
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Old 01-10-2015, 10:33 AM   #15 (permalink)
wallyworld
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Now that I have pump off I see ip bolted to cover, sucks. I can mark ip to cover with chisel. I guess the sequence is take off harmonic balancer before ip so if any moves ip will still be in time with gears. Then take off ip, remove cover, replace gasket, then bolt cover on, then ip, then put harmonic balancer back on. I have gmtd so I can check timing. Way more involved than I thought.
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Old 01-10-2015, 10:58 AM   #16 (permalink)
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There's no need to retime after just removing the timing cover as far as I know, I've done it twice.
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Old 01-10-2015, 01:16 PM   #17 (permalink)
turbovanman
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If your not removing the IP or changing the timing chain-which you should, no retime is necessary.
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1984 G20 Diesel Get a Way Van, 6.2L turbo. Rebuilt 1989 700R4, 3.08 gears. Fluidamper, modified hummer headers, 2.5" mandrel Y-pipe to 3 inch single system, Hooker Max Flo muffler, 3 inch F350 mandrel bent tailpipe-passenger side exit, 6.5L turbo lower intake, 6.5 military IP-5149, Turbonator open faced injectors set to 2500 psi, HX35W with a 60x86mm cast wheel at 15psi, ARP studs, .010" head gaskets, bypass oil system, Dmax van fuel pump/filter combo, Aeromotive fuel pump. REMOTE MOUNT TURBO INSTALLED!!!! Burning hydraulic fluid, jet fuel, WMO.
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2004 VW Wagon TDI 5 speed-blue-also modified-Mine!

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Old 01-10-2015, 04:44 PM   #18 (permalink)
wallyworld
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Quote:
Originally Posted by turbovanman View Post
If your not removing the IP or changing the timing chain-which you should, no retime is necessary.
But I have to unhook the IP from the back of the timing cover, so won't the timing change at least some? Looks like it might be fun getting the timing cover up and out with the IP in there. On my Teds long block the timing cover came off relatively easy as the IP wasn't there.
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1995 3500 hd Automatic 30 ft versalift bucket
PMD relocation kit
Lubrication specialists cooler and lines
Kennedy OPS kit
Alligator 4" exhaust pending

Almost time for an 06 to 08 Teds Motor
Teds motor installed, new Motor mounts, new injectors
New glow plugs.
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Old 01-10-2015, 07:24 PM   #19 (permalink)
HeavyChevy95
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Quote:
Originally Posted by wallyworld View Post
But I have to unhook the IP from the back of the timing cover, so won't the timing change at least some? Looks like it might be fun getting the timing cover up and out with the IP in there. On my Teds long block the timing cover came off relatively easy as the IP wasn't there.

EXACTLY.. Id think twice for opening that new can o worms..
I was going to suggest that you reinstall any bolt(s) that holds the timing chain cover in place that you can be put back in once the bracket(s) are out of the way, do so 'fore you remove the WP w/ cover to lessen the chance of breaking the timing chain cover seal..
And unless its been done before, you shouldn't find a gasket anywhere just beads of anaerobic sealant (GM P/N 1052357) which I suggest you use to reassemble w/o gaskets.. Most of the engines tins and covers are virtually glued in place.

Notice: If the timing chain, timing gears, front cover, crank positioning sensor, crankshaft, or other component(s) affecting timing are replaced, itwill be necessary to reprogram TDCOffset into the PCM.

Whats the mileage?
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Old 01-10-2015, 07:35 PM   #20 (permalink)
wallyworld
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Originally Posted by HeavyChevy95 View Post
EXACTLY.. Id think twice for opening that new can o worms..
I was going to suggest that you reinstall any bolt(s) that holds the timing chain cover in place that you can be put back in once the bracket(s) are out of the way, do so 'fore you remove the WP w/ cover to lessen the chance of breaking the timing chain cover seal..
And unless its been done before, you shouldn't find a gasket anywhere just beads of anaerobic sealant (GM P/N 1052357) which I suggest you use to reassemble w/o gaskets.. Most of the engines tins and covers are virtually glued in place.

Notice: If the timing chain, timing gears, front cover, crank positioning sensor, crankshaft, or other component(s) affecting timing are replaced, itwill be necessary to reprogram TDCOffset into the PCM.

Whats the mileage?
99,000, the motor has idled at least that though. Timing chain isn't going anywhere, only the pump gear has to come off and the pump nuts have to come off. I can do the timing if I have to, I have GMTD so.. I'm more worried about getting cover off and put back together without screwing up IP timing. I'm assuming I can get cover out of there without unhooking all the injector lines?

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1995 3500 hd Automatic 30 ft versalift bucket
PMD relocation kit
Lubrication specialists cooler and lines
Kennedy OPS kit
Alligator 4" exhaust pending

Almost time for an 06 to 08 Teds Motor
Teds motor installed, new Motor mounts, new injectors
New glow plugs.
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