Log Splitter Hydraulic System Work Sheet - MTD 2010 Shop Manual

For Parts Call 606-678-9623 or 606-561-4983

LOG SPLITTER HYDRAULIC SYSTEM WORK SHEET

NOTE: This worksheet must be completed and submitted
with the failed component for a warranty claim to
be paid
NOTE: Detailed hydraulic system testing instructions can
be found in the 2010 and Newer Log Splitters man-
ual, form number 769-06184.
1. Preparation
Inspect the engine coupler, keys and the spider
Check fluid flow from tank to pump (inlet screen)
Check the hydraulic fluid level
Inspect the tank vent
Replace the oil filter
Check engine speed
Install the test gauges between the pump and the
selector valve.
Start and run the log splitter to warm-up the fluid
and check the test set connections for leaks. Cycle
the ram 12 times to purge air from the hydraulic
system.
2. Pump base-line test (ram stationary), record the following:
Engine RPM
Flow meter reading
Pressure reading
Flow rating from the pump capacities chart.
3. Pump load test (ram stationary), record the fol-
lowing:
3a. Slowly close the needle valve just far
enough to identify the by-pass point.
Engine RPM
Flow meter reading
Pressure reading
Pressure rating from the by-pass settings
chart.
For use with test kit part number 759-3742
RPM (set to 3,500)
www.mymowerparts.com
Model number
Serial number
Pump number
Valve number
Pump Capacities
Pump Tonnage
718-04127 21,25 and 27
718-04729 27 ton HP
pump
718-04128 33
NOTE: The engine must be at 3,500 RPM for all
testing. If the engine RPMs fall under load, repair
the engine before testing the hydraulics.
Do NOT exceed 3,200 PSI (220
Bars). This test is performed up-stream
of the relief valve, rendering the relief
valve ineffective during the test. Over-
loading the system will damage the
pump.
Pump By-pass Settings
Pump Tonnage
718-04127 21,25 and 27
718-04729 27 ton HP
pump
718-04128 33
GPM/LPM
+ 0.5 GPM
9.5 (36 lpm)
13 (46 lpm)
15 (57 lpm)
By-pass
Pressure
+ 100 PSI
500 (34 bar)
1,000 (69
bar)
700 (48 bar)
Form Number 769-06191