Troubleshooting Guide
Engine/Motor and Drive Pulleys Alignment
4
4-9
HDdoc012020
Troubleshooting Guide
4.6
Engine/Motor and Drive Pulleys Alignment
1.
Install the drive belt.
2.
Use a straight edge to align the engine/motor pulley to the drive pulley. Also check that the engine pulley is
within 1/8" square with the drive pulley. Loosen the engine mounting bolts and rotate the engine if necessary.
3.
Check front-to-back movement of the engine does not exceed 1/4". Tighten the motor mount U-bolts if neces-
sary.
4.
Engage the clutch handle and adjust the drive belt tension to 7/16" deflection with 10 lb. of force.
5.
Recheck the pulley alignment and engine squareness with the clutch handle engaged. Adjust if necessary.
6.
Adjust the drive belt support to 1/4" (±1/32) from the belt while engaged.
PROBLEM CAUSE
SOLUTION
Hydraulic Side Supports Go
Down Before Or At Same
Time As Log Turner
Dirt in sequence valve
Remove sequence valves and clean thoroughly
with kerosene.
NOTE:
Be sure to reassemble
the valve and install it in its original position on
the cylinder
Retainer in sequence valve
worn
Replace sequence valve
Low air temperature causing
fluid to thicken
Allow fluid to warm up. Synthetic fluids are
available that allow for hydraulic operation in
cold weather conditions (Mobil SHC 526)
Hydraulic Turner Goes Up
Before Or At Same Time As
Side Supports
Spring weakening in
sequence valve
Locate sequence valve at top of turner cylinder.
Turn heavy spring in about 1/4 turn
Dirt in sequence valve
Remove sequence valves and clean thoroughly
with kerosene.
NOTE:
Be sure to reassemble
the valve and install it in its original position on
the cylinder
Retainer in sequence valve
worn
Replace sequence valve
Low air temperature causing
fluid to thicken
Allow fluid to warm up. Synthetic fluids are
available that allow for hydraulic operation in
cold weather conditions. (Mobil SHC 526)
Springs weakening in
sequence valve.
Locate sequence valve at bottom of turner cyl-
inder. Turn heavy spring in about 1/4 turn