6415 power quad slipping in forward
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Thread: 6415 power quad slipping in forward

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    6415 power quad slipping in forward

    So it just started to happen, only in forward, all ranges, all gears. Reverse is all good. Repair books ordered but 4 weeks away.
    Any advice. Thanks

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    Sounds like a problem with the forward clutch. Clutch could be worn, seals on piston could be leaking, or if power reverser, could be bad solenoid. Will need to do pressure testing to isolate the cause.
    RandyM likes this.

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    Update

    Pressures tested, only 100 psi at forward clutch test port,175 at reverse test port. But no cooling oil pressure. Does machine have to be at operating temp to get cooling oil to start?. It was -32c when I was trying to test. Spent 6hrs pulling out tranny and inspecting forward clutch piston seal and it seems to sit low in the groove, should it not protrude?. Fibre plates in both brake and forward packs look great.
    BigJim55 likes this.

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    johnH123's Avatar
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    do you have a service manual?
    - 2002 John Deere 4510 TLB PR,
    -Woods BB60X 60" rotary cutter
    -Countyline box blade,
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    Yes I have one on cd

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    Forward drum was cracked

    You could see the crack on the closed end of drum where there was a 90 in the casting. Ordered the update for it.

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