700r4 Loud Roar No Output in Any Gear UPDATED

700r4 Loud Roar No Output in Any Gear

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Calling trans experts - 700R4 noises

• Thread starter flak monkey
• Starting time date April 18, 2014

• #1

After installing my rebuilt 700R4 I've got a small-scale trouble. I've rebuilt it with a PATC Raptor Junior kit, which includes a host of upgrade parts. #545 here

http://www.transmissioncenter.org/Combo_Kits.htm#700R4

At that place is a clicking/ticking noise that just happens in 1st and third and it's quite loud. Matches route speed, no noises in 2nd or 4th that I can hear. Sounds like it's coming from the transmission surface area somewhere.

The noise is loudest in 1st, quieter in 3rd. You can't hear it with the windows downwardly. Shifts are all proficient, chirps the tyres 1-2 even with very lite throttle.

If you concur your foot on the brake and give it some revs it doesn't rattle either.

Tried to get information technology to do information technology with the auto up on jack stands and in gear. Fifty-fifty with light pressure on brakes, no noises in any gear at all...

So it only seems to do information technology under load in 1st and 3rd.

Doesn't slip and shifts just fine. Anyone got any ideas on that 1?

• #2

The trouble might non be in the tranny. U joints similar to click when they have some clothing or are installed improperly. U joint clicking might change with load on them. Audit them carefully for bug.

• #three

The driveshaft and U joints are all new (pro built). Stripped them all downwardly and refitted, no problems found and the result remains.

It's non got any worse in 500 miles, merely withal worries me. It varies in how loud it is, doesn't seem to exist any design other than its *e'er* in that location in 1st and 3rd. It'southward as well 100% output shaft speed related.

Could be band or servo related perhaps?

Reckon I might have to pull it and strip information technology down over again to investigate. Anyone have any more insights?

• #four

If y'all're looking for experts, go hither:

YELLOWBULLET-Hutch'due south transmission forum

This is the identify where the known names hang out. Hutch answers all questions and the balance is mostly bitching who's got the longest...

Having rebuilt a couple 700'southward and a 4L60, I would say it'due south got something to exercise with the sun shell, which is spinning in 1st and 3rd and held by the ring in 2nd and 4th.
Did you take any clearance problems during final assembly? Maybe something is not seated properly so the sun shell is wobbling?
Did you replace bushings? Haven't forgotten one?

What does it do in neutral?

Good luck.

• #5

• #6

Thanks. I'm going to take to pull information technology and investigate. I don't think whatever clearance issues with the sun shell, although information technology is thicker than the stock ane.

Bit of a PITA, but it's a long weekend coming so got fourth dimension to strip it out and investigate once again.

• #7

The two bolts, due north and south of the band ballast pivot, go all the fashion through the case. If a slightly longer bolt was installed in those positions then they could contact the dominicus vanquish (south) or reverse input drum (north)

• #8

Thanks, you hateful the 2 circled in red below (click to enlarge)?

Gotta be worth a shot before stripping the trans....

• #9

• #10

Thanks I'll driblet the pan at the weekend and meet if I can become whatsoever clues on the trouble

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700r4 Loud Roar No Output in Any Gear UPDATED

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