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Curtis B.
Curtis B., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 26740
Experience:  Technician turned service manager on multiple lines of trucks and engines, used in industry.
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I have MT 653 lost only reverse ??? thank richie, Just lost

Customer Question

I have MT 653 lost only reverse ??? thank richie
JA: We'll do all we can to help. Tell me a bit more about what's going on so the Heavy Equipment Mechanic can help you best.
Customer: Just lost reverse on my oil truck
JA: Is there anything else the Heavy Equipment Mechanic should be aware of?
Customer: no!!!!
JA: I'm sending you to a secure page on JustAnswer so you can place the $5 fully refundable deposit now. While you're filling out that form, I'll tell the Heavy Equipment Mechanic about your situation and connect you two.
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Curtis B. replied 1 year ago.

It takes twice the clutch pressure to engage reverse as the forward clutch. Likely the charge pump is failing , driven by the torque convertor. Run pressure test on forward and reverse, and if reverse does not increase, either reverse clutch seals are leaking or the charge pump is going out. Either way, transmission has to be removed and disassembled. Forward clutch pressure will be around 180 to 200 and reverse will be 360 or more.

Customer: replied 1 year ago.
thanks is that pump accessible from the bottom for exchange or repair
Expert:  Curtis B. replied 1 year ago.

No, pump is behind the torque convertor and is sold only as new