Torque converter installation error - Missed front pump
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SO .. you've started to tighten up your 700r4, 4L60 or 4L60e bell housing to the motor and the torque converter has run into the flex-plate a bit too early. Getting those bolts into the back of the bell housing was tricky and you want to save some time by not entirely dropping the transmission again. Here's what you need to do: | SO .. you've started to tighten up your 700r4, 4L60 or 4L60e bell housing to the motor and the torque converter has run into the flex-plate a bit too early. Getting those bolts into the back of the bell housing was tricky and you want to save some time by not entirely dropping the transmission again. Here's what you need to do: | ||
| − | Acquire two (2) grade-8 2.5" course thread bolts. If you have an engine stand, use the ones you have for the stand. Remove the bottom left and right bell housing bolts. Replace them with the 2.5 inch grade 8 bolts (Available from Home Depot for less than a buck each) - if they don't know what a "grade 8" bolt is, you need to ask a different sales associate. Thread the bolts into the motor about 12 to 20 mm. You'll probably be able to do this by hand. Undo the other four (or more if you've got an LS motor) bell housing bolts until they're no longer threaded, but do NOT remove them from the bell housing. | + | Acquire two (2) grade-8 2.5" course thread bolts. Grade 8 bolts have 6 lines on the heads, one pointing to each point of the head. If you have an engine stand, use the ones you have for the stand. Remove the bottom left and right bell housing bolts. Replace them with the 2.5 inch grade 8 bolts (Available from Home Depot for less than a buck each) - if they don't know what a "grade 8" bolt is, you need to ask a different sales associate. Thread the bolts into the motor about 8 full turns (1/2" to 3/4", 12 to 20 mm). You'll probably be able to do this by hand. Undo the other four (or more if you've got an LS motor) bell housing bolts until they're no longer threaded, but do NOT remove them from the bell housing. |
Disconnect the flex plate from the torque converter if you haven't already. | Disconnect the flex plate from the torque converter if you haven't already. | ||
| − | Disconnect the driveshaft(s). Push/pull/lever the transmission backwards 15-30 mm or so. Pull the torque converter forward, rotate it a bit, then push it back into the transmission. Repeat until it seats so that you can no longer get your fingers behind it (should be less than 10 mm between the rear of the torque converter and the transmission. This will seat the TC on the front pump properly. This may take several goes, just persist and, so long as you can freely spin the TC, you will eventually get it. | + | Disconnect the driveshaft(s). Push/pull/lever the transmission backwards about 3/4" to 1-1/4" (15-30 mm) or so. Pull the torque converter forward, rotate it a bit, then push it back into the transmission. Repeat until it seats so that you can no longer get your fingers behind it (should be less than 1/2" (10 mm) between the rear of the torque converter and the transmission. This will seat the TC on the front pump properly. This may take several goes, just persist and, so long as you can freely spin the TC, you will eventually get it. |
Bolt up the four short bell housing bolts. | Bolt up the four short bell housing bolts. | ||
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