Another Volvo 280 reverse issue.

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capitan72

Cadet
Joined
Oct 8, 2009
Messages
19
Ive got a Volvo AQ280 and the reverse won't lock. I have taken the locking tabs (spring hooks) out and cleaned them up lithium greased everything, everything moves smoothly. The problem seems to be that the locking mechanism wont completely engage the crossbar, its about 1/4" short. I tried backing the nut off of the push rod but that didnt seem to help. The bottom line is the pushrod is keeping the latch from completely engaging. Should I just bend it a little? I think that may solve my problem. Also the tabs seem worn but I don't think that is the major issue.

Thanks
 
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PiratePast40

Lieutenant Commander
Joined
Mar 21, 2009
Messages
1,734
Re: Another Volvo 280 reverse issue.

Might be a long shot but the shaft pins need to be backed out 1/8 turn if they were tightened up. If they're not loosened up, the pawls won't catch. Don't ask how I know :rolleyes:.
 
mcleaves

mcleaves

Chief Petty Officer
Joined
Sep 15, 2003
Messages
521
Re: Another Volvo 280 reverse issue.

capitan72 said:
I tried backing the nut off of the push rod but that didnt seem to help.
Click to expand...

I am not sure if I understand this statement the way you meant it, but backing off the nut at the top of the thrust rod won't help. The thrust rod SLEEVE needs to be turned also. The nut is just used as a locking stop. Lower the nut down the rod (toward the ground) and the lower the sleeve.

What happens often is the reverse kickup gets tripped for some reason (hitting bottom) and the drive comes up and slams back down. It bends, usually MASHES the sleeve. If that sleeve is not perfectly straight it will hang up inside the yoke.

Personally I am convinced this mechanism was invented by satan himself. It works great when it's setup properly, but when it's not...

M
 
jerryjerry05

jerryjerry05

Supreme Mariner
Joined
May 7, 2008
Messages
17,926
Re: Another Volvo 280 reverse issue.

Sometimes the push rod housing gets corroded or the soft aluninum get smushed and restricts the travel.Without free travel it won't operate correctly.
I installed hundreds of those drives and we drilled out the first 1/4" of the top.
If the locking pauls have any wear at all they won't hold either.If the springs are weak or have gunk on them they won't work right.Post some pics of all the parts.J
 
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captmello

Captain
Joined
Jun 30, 2008
Messages
3,828
Re: Another Volvo 280 reverse issue.

Also confirm that the lift mechanism is retacting all the way and not holding the rod down when the drive is down all the way. As stated before, there are a lot of variables to check.
 
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