Tecumsehpower Hydrostatic Transaxle - Rayco RG25HD Operator, Service, Maintenance, Parts Manual

TecumsehPower and Peerless Transmission, Transaxle and Gear
Before troubleshooting any system problem, see original equipment manufacturer's (O.E.M.) instructions.
Make your troubleshooting easier by preparing as follows:
• Work in a clean, well-lighted place.
• Keep proper tools and materials nearby.
Basic Gear Drive Troubleshooting -
• Keep an adequate supply of clean petroleum-based solvent.
To avoid carbon monoxide poisoning, make sure engine is outdoors in a well-ventilated area.
6. Check the brake/clutch pedal to make sure that when the pedal is depressed that the idler pulley is releasing
the belt tension before it applies the brake. If this does not happen the unit will still be under a load and be
Some maintenance procedures cannot be performed until the vehicle wheels are secured and off
WARNING
impossible to shift.
the ground. Failure to do so could result in death or serious injury to yourself and/or bystanders.
7. The final area to check would be for damaged or binding shift linkage.
DO NOT attempt any maintenance procedures with the engine running. Doing so could result in
WARNING
death or serious injury to yourself and/or bystanders.
Hard shifting with the engine off could be caused by:
1. Shift linkage out of adjustment.
Use care when performing inspection of the drive belt assembly including all vehicle linkage.
WARNING
2. Corrosion in the transaxle or transmission.
Failure to do so could result in death or serious injury to yourself and/or bystanders.
3. Damaged shift keys, gears, or shifter brake shaft.
4. Belt guides missing or improperly adjusted (see equipment manufacturer specs).
Troubleshooting Chart
Use of this troubleshooting chart will aid in determining the source of a problem; the hydrostatic transmission,
Unit seems to slip:
final drive or vehicle's belt drive and/or linkage systems.
1. Check for proper belt adjustment (consult O.E.M. operator's manual).
2. Check for proper clutch/brake adjustment (consult O.E.M. operator's manual).
3. Check pulley condition and wheels for sheared or damaged keys.

TecumsehPower Hydrostatic Transaxle

4. Check drive belt condition, if glazed or worn, replace it.
5. Possible internal transmission damage. We suggest you contact a local Rayco Dealer.
Hydrostatic
Transmission
SYMPTOM
Improper belt tension
Belt worn, glazed, or oil saturated
Drive pulley worn
Brake set too tight
Shifter linkage misadjusted or broken
Fluid low in hydrostatic transmission
Hydrostatic transmission bad
Linkage broken or bent
TecumsehPower Transaxle Troubleshooting -
Hydrostatic transmission pump seized
Hydrostatic transmission control friction
pack misadjusted
SYMPTOM
Final drive gear noise
Hydrostatic transmission noise
Transaxle clicking
800.392.2686
Improper belt tension
Troubleshooting
PROBLEM
PROBLEM
NOTE
RG25DH Operation • Service • Maintenance • Parts Manual
Final Drive
CORRECTIVE ACTION
Belt worn, replace
Replace belt
Replace pulley and belt
(See O.E.M. equipment manual)
Set brake adjustment
(See O.E.M. equipment manual)
Linkage damaged or loose, replace or adjust
(See O.E.M. equipment manual)
Check and add fluid if low (Part No. 730228A)
Replace hydrostatic transmission
Repair or replace linkage
(See O.E.M. equipment manual)
continued
Replace hydrostatic transmission
Replace friction pack washers, tighten nut
to 100 in. lbs. (11.2 Nm) loosen nut 4-turns
CORRECTIVE ACTION
Check, add gear oil to final drive
Check, replace worn gears
Check, replace worn bearings
Replace hydrostatic transmission
Mechanical disconnect not properly engaged,
check for obstruction
Check, replace mechanical disconnect
components (If hydrostatic transmission
shaft is damaged, replace transmission)
Belt worn, replace
(See O.E.M. equipment manual)
continued
Maintenance
43