MAINTENANCE

MAINTENANCE

POSSIBLE TROUBLE

POSSIBLE TROUBLE

CAUSES

 

 

REMEDIES

 

 

 

 

 

 

 

 

 

1. Motor turns while unloaded

A. Scored back plate.

A.

Remove

backplate

and

but slows down or stops when

B. Scored or worn piston shoes.

examine surface condition of flat

load is applied.

C. Low relief valve pressure.

area;

if

 

scored,

 

replace

 

 

backplate. DO NOT LAP.

 

 

 

 

B. Disassemble motor,

examine

 

 

condition of shoes on pistons;

 

 

replace pistons as a complete

 

 

set if necessary. DO NOT LAP.

 

 

C. Check relief valve for proper

 

 

pressure

setting adjust

or

 

 

replace relief valve.

 

 

 

 

 

 

 

 

 

2. Motor will not turn.

A. Severely scored backplate.

A.

Disassemble

 

motor

 

 

completely. Inspect

all

parts,

 

 

clean all parts, replace all worn

 

 

parts and flush hydraulic system.

 

 

 

3. Motor free wheels.

A. Oil-flow and pressure shut off

A. When the hydraulic system is

 

going to motor.

shut off, either by shutting off the

 

 

engine on a closed loop system

 

 

or returning the control valve

 

 

spool to neutral on an open

 

 

center system, the motor will

 

 

free-wheel after it has leaked off.

 

 

This is inherent in the design. On

 

 

a closed loop or propulsion

 

 

system,

the

motor

will

not

 

 

free-wheel as long as charge

 

 

pressure is maintained to and

 

 

from the motor.

 

 

 

 

 

 

 

4. Excessive case drain flow.

A. Excessive internal wear in

A. Disassemble motor,

inspect

 

motor.

parts and replace as necessary.

 

 

Case drain flow should not

 

 

exceed 1.5 GPM at full pressure.

 

 

 

 

 

 

 

 

 

GRASS KING 03/09

Maintenance Section 5-12

© 2009 Alamo Group Inc.

Page 140
Image 140
Alamo none manual Possible Trouble Causes Remedies

none specifications

Alamo is a prominent historical site located in San Antonio, Texas, that embodies a rich tapestry of events from the early 19th century. Originally established as a Spanish mission known as Mission San Antonio de Padua in the early 1700s, the Alamo has become a symbol of resistance and valor in the face of overwhelming odds. Its most significant moment came during the Texas Revolution in 1836 when a small group of Texian defenders made a valiant stand against the much larger Mexican army.

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