Troubleshooting Guide
Hydraulic Problems
4
4-11
HDSdoc091108
Troubleshooting Guide
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 kero-
sene.
NOTE:
Be sure to reas-
semble 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. Syn-
thetic 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 kero-
sene.
NOTE:
Be sure to reas-
semble 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. Syn-
thetic fluids are available that
allow for hydraulic operation
in cold weather conditions.
(Mobil SHC 526)
Springs weakening in
sequence valve.
Locate sequence valve at bot-
tom of turner cylinder. Turn
heavy spring in about 1/4 turn
Summary of Contents for LT40 DH
Page 1: ......
Page 2: ......
Page 69: ...Maintenance Carriage Track Wiper Scrapers Maintenance HDSdoc091108 3 5 3 FIG 3 3 ...