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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 04-02-2014, 08:32 PM   #11 (permalink)
racer55
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Yes LP is run by OPS on 93-still electric LP on 93.

Google or look here for OPS relay mod.

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Old 04-02-2014, 08:32 PM   #12 (permalink)
Freddyack
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Here is a thread I dug up. I am pretty sure the OPS powers the lift pump on a 1993: https://www.dieselplace.com/forum/63-...key-crank.html.

Hopefully Glagulator will respond. He is a wizard with 6.5L electricals, including pictures and diagrams

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Old 04-02-2014, 08:45 PM   #13 (permalink)
FriedChicken
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Just ordered the DORMAN Part # CC649028 from RockAuto.

Somehow I missed the 'RockAuto' part and just googled the part number and wound up on amazon.
$103.xx shipped! Seems like a good deal to me. Especially since O'reilys is $133 and has the part listed as unavailable, autozone has one in stock but is $180.

Told RockAuto that dieselplace.com was where I heard of them to put a plug in for the forum.
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Trouble truck:

93' Chevy 1-ton 4x4. 6.5td (NEEDING to be rebuilt), NV4500 (rebuilt), BW4470 (rebuilt).

This thing is eating my wallet!
Looking forward to having a reliable truck again.
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Old 04-02-2014, 10:06 PM   #14 (permalink)
wespierce
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clutch master splitting is a symptom of a bad clutch fork ball. the only way to repair is to drop trans, remove the bell housing then replace the ball reassemble. while that is being done take a close look at the clutch fork for spider cracks at the clutch ball piviot point. I had these exact same problems until I replaced the ball and fork. btw the ball is a pia to find.
wes
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Old 04-02-2014, 10:14 PM   #15 (permalink)
Glagulator
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Racer55is correct, the 93 is setup almost exactly like the 94, power source is a grey FL (orange wire) at the battery junction block, control is from the crank fuse.
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99 CREW LONG SRW C3500 work truck 199k+ mi. orig. motor & trans 4.10, modded engine harness, new oil cooler & lines, all new front end parts and poly bushings, trans poly mount, all new brakes.
96 SUBURBAN K2500 wife's truck 210k+ mi. orig. motor & trans, 3.73...
95 C2500 Suburban 6.5td HO w/p, timing set, HB & pulley, all rubber hoses, modded engine & main harness, converted to OBD2, PMD to bumper...
95 C1500 Suburban 6.5td rebuild tranny, convert to DB2, replacing as many parts as I can.
96 C2500 Suburban 7.4L converting to 6.5td w/ DB2, 4L80, 3.73
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Old 04-07-2014, 04:05 PM   #16 (permalink)
FriedChicken
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Alright.
Got the master and slave complete in the mail. Crazy week and haven't been able to do anything to diagnose the starting problem.

Considering buying a spare [non-starting] diesel engine with nv4500 trans/clutch/etc. for $600 for the spare parts.
Started another thread on that topic asking advice about the purchase.
__________________
Trouble truck:

93' Chevy 1-ton 4x4. 6.5td (NEEDING to be rebuilt), NV4500 (rebuilt), BW4470 (rebuilt).

This thing is eating my wallet!
Looking forward to having a reliable truck again.
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Old 04-08-2014, 09:17 PM   #17 (permalink)
FriedChicken
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worked on it a bit after I got off today. I got the old clutch master off, ground off the broken stud flush with firewall and drilled a hole through it for an alternative fastener (self-tapping sheet metal screw).

Ran out of daylight and there was a puddle under the truck so I didn't want to get the slave off.

I jumped in to see if it would start and it started up like normal more than once.
Hoping that is a good sign.

If I get off in time for some daylight I'll role the truck to a dryer spot and get the master and slave installed then pull it in the garage next chance I get and troubleshoot the starting issue.
__________________
Trouble truck:

93' Chevy 1-ton 4x4. 6.5td (NEEDING to be rebuilt), NV4500 (rebuilt), BW4470 (rebuilt).

This thing is eating my wallet!
Looking forward to having a reliable truck again.
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Old 04-11-2014, 07:47 AM   #18 (permalink)
FriedChicken
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Well, had a pretty frustrating day two days ago (haven't had time to post since).

went to install my new clutch master and slave.
The old ones unbolted and came right off, no problems. Because of all the extra electrical wires and hoses run half hazardously all over my engine bay from a previous veggie oil conversion (a different owner) it made it EXTREMELY hard to fish the slave (this is a pre bled, pre assembled package) through everything down to under the truck.

My crossover pipe had to be taken off (and the bolts were seized so that was a project in and of itself) just to make it possible.

Finally got it down to being in place but broke the plastic retention strap things before installing it.
I didn't figure that was a big deal because I thought they were temporary anyway (the one I pulled off my truck had them and they were broken as well)

once installed I went to push the clutch. It was very hard, I let up, pushed again and it was harder.
Then it gave suddenly.

Fluid puddle under the truck. By this time it was dark and I was working with my phone's flashlight so I didn't determine if it was leaking at the master or the slave.


... so it basically did what my old master/slave did.
I checked the line for any kinks, there were none.

Did air get in the lines when I broke the plastic thingies and that is was cause it to be stiff and break again?

Or do you think its something with the clutch fork causing this to happen like the one poster on this thread suggested?

Also ... do you think these lines can be hooked back up or do I need new ones?


I know I sound pretty stupid right now.
I'm hoping to hook the lines back up when I get a chance, bleed it and see if the peddle is stiff again.
__________________
Trouble truck:

93' Chevy 1-ton 4x4. 6.5td (NEEDING to be rebuilt), NV4500 (rebuilt), BW4470 (rebuilt).

This thing is eating my wallet!
Looking forward to having a reliable truck again.
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Old 04-11-2014, 05:23 PM   #19 (permalink)
racer55
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Sounds like something is bound up pretty tight?
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Diagnostic Checklist 2.0
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Old 04-11-2014, 09:15 PM   #20 (permalink)
FriedChicken
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Quote:
Originally Posted by racer55 View Post
Sounds like something is bound up pretty tight?
Thats ... really not what I wanted you to say. lol.
I'll see about hooking everything back up next chance I get (I'll be waterproofing my basement this weekend so I'm not expecting to get to it) and seeing if it was just air in the lines.

... what is odd is that I was being careful pushing the clutch. If it wasn't moving I wouldn't have crammed on it, it was just firm steady pressure.

I'm a little un-impressed with how little pressure it seems to take before blowing the lines.

__________________
Trouble truck:

93' Chevy 1-ton 4x4. 6.5td (NEEDING to be rebuilt), NV4500 (rebuilt), BW4470 (rebuilt).

This thing is eating my wallet!
Looking forward to having a reliable truck again.
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