Mahindra ML170 series User Manual

77
24.2. TROUBLE SHOOTING FOR LOADERS WITH OPTIONAL SELF LEVELING
PROBLEM POSSIBLE CAUSE CORRECTION
Bad float switch in the valve handle. Repair or replace the handle and
switch.
Bucket does not self-level
On-Off Solenoid Valve stuck in the
ON position.
Check the Solenoid Valve on Self
Level Valve.
Bucket self-leveling is designed to
work optimally at high RPM.
Run engine at high RPM (1700 or
above).
Bucket does not maintain level
while raising or lowering at
engine speeds other than high
idle.
Loader valve lift spool not fully
stroked.
Fully stroke the loader lift spool.
Flow divider spool stuck. *Check flow divider spool for free
operation. (Check for
contamination.)
Bucket does not maintain level
while raising at high idle.
Raise counterbalance valve stuck. *Remove and check for
contamination.
Flow divider spool stuck. *Check flow divider cartridge for
free operation.
Lower modulator valve stuck. *Remove and check for
contamination. (Spool should move
freely in bore.)
Bucket does not maintain level
while lowering at high idle.
Lift check valve stuck (cartridge). *Remove and check for
contamination.
Bad bucket cylinder seal. Repack cylinder.
Raise counterbalance valve stuck. *Remove and check for
contamination.
Bad Anti-Cavitation relief valve
cartridge.
*Check Anti-Cavitation check valve
cartridge. Remove and check for
contamination or replace.
Excessive bucket drift in the
dump direction.
Excessive loader control valve
bucket spool port leakage.
Check with Factory on acceptable
valve spool leakage rate. Replace if
required.
Bucket moves freely when
putting down pressure on cutting
edge.
Pilot operator check is not closing
(cartridge plus pilot piston).
*Remove and check for
contamination. Replace if required.
Loader bounces with lowering
load.
Low hydraulic flow. Increase tractor RPM to increase
hydraulic flow.
Self-Leveling does not operate
after initial hook-up.
Circuit not hooked up correctly. Check that circuits are hooked up
as follows.
Self Level Valve Ports
to Loader Valve
Self Level Valve Ports
to Loader Cylinders
Circuit Color Tag
1 5 Lift Base Green
2 6 Lift Rod Blue
3 7 Tilt Base Yellow
4 8 Tilt Rod Red
*NOTE: This service must only be accomplished by an Authorized Mahindra Service Person. Failure to
follow these instructions will void warranty.

Mahindra ML170 series Specifications

General

Brand	Mahindra
Model	ML170 series
Category	Tractor
Language	English