Had to pop the cover off the rear differential on my Isuzu. I will be putting all together tomorrow.
Factory RTV was gray in color, I am using Permatex Super Black. Have a question about the bolts. The cover is aluminum, after I pulled the bolts out, I noticed that they seem to have red locktite on them, on the top part, about 2/3 of the way up the shaft. This does not make sense, since that part of the bolt would be inside the non-threaded cover, not the differential itself. Am I missing something????
BTW I scraped all the old silicone off, hit mating surfaces with 70% rubbing alcohol, tomorrow degrease with brake cleaner and alcohol one more time, then RTV and bolt it down... Any pointers?? First time working on the differential.
I assume I need to wait 24 hours before filing up the differential with oil.
The drain/fill plugs did not have crush washers, just threaded plugs with a square hole for a 3/8 ratchet. Should I put a strip of Teflon tape on the threads (hesitant to do it)?The dealer did the 30K mile service, I am doing the 60K. There was no tape on the plugs when I took them out, I just do not see how they can seal w/o washers or tape.
I have Isuzu FSM, it did not mention anything about Teflon tape or locktite. In fact, other that mentioning tightening torque for the bolts, not a word about taking the cover off or reinstalling it.
Thanks for the help!
BTW old oil was 4 years old, had about 25K miles on it. It smelled surprisingly OK, I expected much worse. No water, still looked clear, magnets on the plugs had some fine metal paste, but not a whole lot. I am replacing it with ST 75-90 GL5 Synthetic blend with a tube of GM-approved LSD additive. Manual calls for 80W-90 in the rear, 75w-90 in the front, I am doing 75W-90 in both.
Factory RTV was gray in color, I am using Permatex Super Black. Have a question about the bolts. The cover is aluminum, after I pulled the bolts out, I noticed that they seem to have red locktite on them, on the top part, about 2/3 of the way up the shaft. This does not make sense, since that part of the bolt would be inside the non-threaded cover, not the differential itself. Am I missing something????
BTW I scraped all the old silicone off, hit mating surfaces with 70% rubbing alcohol, tomorrow degrease with brake cleaner and alcohol one more time, then RTV and bolt it down... Any pointers?? First time working on the differential.
I assume I need to wait 24 hours before filing up the differential with oil.
The drain/fill plugs did not have crush washers, just threaded plugs with a square hole for a 3/8 ratchet. Should I put a strip of Teflon tape on the threads (hesitant to do it)?The dealer did the 30K mile service, I am doing the 60K. There was no tape on the plugs when I took them out, I just do not see how they can seal w/o washers or tape.
I have Isuzu FSM, it did not mention anything about Teflon tape or locktite. In fact, other that mentioning tightening torque for the bolts, not a word about taking the cover off or reinstalling it.
Thanks for the help!
BTW old oil was 4 years old, had about 25K miles on it. It smelled surprisingly OK, I expected much worse. No water, still looked clear, magnets on the plugs had some fine metal paste, but not a whole lot. I am replacing it with ST 75-90 GL5 Synthetic blend with a tube of GM-approved LSD additive. Manual calls for 80W-90 in the rear, 75w-90 in the front, I am doing 75W-90 in both.
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