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randy82k · Nov 25, 2010, 07:50 AM

John Deere LT150 with Hydro transmission. Works great in forward but reverse is slow and lacks power. Is this an adjustment, or something failing inside the trans?

crigby · Nov 25, 2010, 10:20 AM

Hi,
If this is a recent occurrence, check for a bent rod or damaged drive belt/idler. Reverse should be no more than 50% of forward speed.
Some models are adjustable. Also, the pedals are bolted under the running board and can be loosened and moved upward in the small slot they have to achieve more travel.
Peace,
Clarke

randy82k · Nov 25, 2010, 08:11 PM

The slow reverse with low power began last year about the time I had been using the mower to move a trailer around the year. The trailer is about 6'wide and 16' long with a double axle. It was at one time used to haul 4 snow machines but is too narrow for today's machines. I suspect that this may of damage the tranny. I have also wondered about adjustment to linkage but looking under the running board it wasn't apparent to me. When mowing with a loaded grass bags, It sometime is all it can do to backup. Other times it reverses OK but seems slow. This machine has a forward petal, and a reverse petal not the combined petal like most mowers have, I suspect this is just done through linkage. Any more comments would be appreciated.

RA

crigby · Nov 26, 2010, 10:53 AM

Hi,
Firstly let me say that the machine in question had a 450-500 lb payload limit for towing. It also had a maximum allowable tongue weight. It is listed as nonserviceable, though I have disassembled them and cleaned them if the internal scoring was not too severe.
I went to JDParts to download the linkage picture and those are always memory-joggers. The adjustment is at the lever on the transaxle; locked by a nut and is a threaded ferrule. Getting more reverse will affect the forward speed available in the opposite direction, i.e. more reverse, less forward. There could be wear in the #5 and #24 bushings on the pedal assembly, wear in #2, #4, #9 and/or #22 at the squared junctions, or the place where #20 joins #22.
The parts in question ar #18 locknut, #19 ferrule and #20 rod to perform an adjustment. Push the reverse pedal to see which way it pulls/pushes the lever. Turn the ferrule in the opposite direction to get more travel.
Peace,
Clarke