Clutch question.. not slipping but wont hold sitting still?

[Macrobb]

The other truck doesn't have a 460... It has a zf5 from a 460 which has a much lower first gear.

I caught that it had an IDI, but missed that it had a wide-range ZF5. That would explain it - otherwise, the 3.55 ratio should make it /worse/, as there's more wheel turn per driveline rotation. But the lower first gear compensates for that - from a final drive ratio of 16.97 on the 4.10/close-ratio to 20.31 on the 3.55/wide-ratio truck.

 

[riotwarrior]

As I said...mark the clutch assembly

$$'s to dohnuts its engine not clutch

 

[AcIdBuRn02ZTS]

As I said...mark the clutch assembly

$$'s to dohnuts its engine not clutch

Going to in the morning when I get to work. If that is the case, I'm not worried about it at all. The parking brake will be fixed soon when I swap my new rearend into the truck.. however the sound it makes when it moves certainly makes it sound like the clutch is slipping and I never really thought to check it to see if that was actually what was happening.

I'll post back up in the morning either way.

 

[AcIdBuRn02ZTS]

Yup... engine is turning over ever so slightly. No longer worried about it.

Thanks

 

[79jasper]

Also, don't put it in a gear that will roll the engine backwards. Not as much compression that way.

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[AcIdBuRn02ZTS]

Also, don't put it in a gear that will roll the engine backwards. Not as much compression that way.

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Probably the reason it says to lock the trans in reverse on the visor instead of 1st.

 

[79jasper]

Though it doesn't specify, that's correct for facing uphill, but not downhill.

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[AcIdBuRn02ZTS]

Yup. I thought it was odd they would specify though

 

[riotwarrior]

Ahhh...the concenus of OB is Vindicated....

 

[madpogue]

The solution? Fix your [strike]E-[/strike] PARKING brake, or install a driveline brake.

Fixed. And yes, that's THE solution. The OP's experience is exactly why it's called a parking brake.

(Says the guy who... ah... errr... still hasn't installed his new cables in his '85......)