Gehl Compact Track Loader CTL55 Service Manual 917366B – PDF DOWNLOAD

Gehl Compact Track Loader CTL55 Service Manual 917366B – PDF DOWNLOAD

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Gehl Compact Track Loader CTL55 Service Manual 917366B – PDF DOWNLOAD

FOREWORD:

• This manual, which is written for engineers who service the machine, describes procedures for disassembly and assembly, inspection and maintenance, and troubleshooting, as well as maintenance reference values and an outline of the specifications.
• Refer to this manual during daily work to improve your services. Note that the information is subject to change without notice due to design modifications made to the machine from time to time by the manufacturer.

Directional terms: front, rear, left, right:
In this manual, the “front” refers to the end of the machine where the bucket is mounted, while the “rear” refers to the other end where the travel motor is mounted. The “right” or “left” refers to the side viewed by a person sitting in the operator’s seat.
Machine serial number
The machine serial number is stamped on the identification plate. Be sure to include this number when sending a report or
inquiry or when ordering parts.
Control of manual
Appoint a person in charge of keeping the manuals up to date in your company and inform us of the person’s name for our
records. Any revisions or additions to this manual will be sent to the person.
Symbols used in this manual
The symbols used in this manual have the following meanings.

TABLE OF CONTENTS:

Gehl Compact Track Loader CTL55 Service Manual 917366B – PDF DOWNLOAD

CTL55, #917366 Revision B 09/08…………………………………………….. 1
Foreward …………………………………………………………………. 2
SAFETY……………………………………………………………………. 3
Safety alert symbol…………………………………………………….. 4
Safety precautions……………………………………………………… 5
Cautions when working…………………………………………………… 11
SERVICE DATA………………………………………………………………. 13
Dimensional drawing…………………………………………………….. 14
Specifications tables…………………………………………………… 15
Lubricant and Fuel chart………………………………………………… 18
Performance criteria……………………………………………………. 20
Tightening torque………………………………………………………. 28
Hydraulic circuit diagram……………………………………………….. 31
Electrical wiring diagram……………………………………………….. 32
Wire harness diagram……………………………………………………. 34
FUNCTION………………………………………………………………….. 37
HST pump………………………………………………………………. 38
Gear pump……………………………………………………………… 41
Control valve………………………………………………………….. 42
Sub valve……………………………………………………………… 46
Self-level valve……………………………………………………….. 48
Pilot valve……………………………………………………………. 50
Proportional control solenoid valve………………………………………. 51
Cylinders……………………………………………………………… 52
Travel motor…………………………………………………………… 53
Air conditioner system………………………………………………….. 57
DISASSEMBLY AND ASSEMBLY……………………………………………………. 79
Service standards………………………………………………………. 80
Drive system…………………………………………………………… 82
Travel system………………………………………………………….. 89
Frame…………………………………………………………………. 92
Control system…………………………………………………………. 97
Attachments……………………………………………………………. 99
Hydraulic tank………………………………………………………….106
HST pump……………………………………………………………….108
Gear pump………………………………………………………………132
Control valve…………………………………………………………..137
Sub valve………………………………………………………………143
Self-level valve………………………………………………………..148
Pilot valve…………………………………………………………….152
Proportional control solenoid valve……………………………………….159
Cylinders………………………………………………………………161
Travel motor……………………………………………………………175
Air conditioner…………………………………………………………195
TROUBLESHOOTING…………………………………………………………….199
Overall machine…………………………………………………………201
No operation is possible……………………………………………..201
All systems working, but insufficient power…………………………….204
Lift arm and bucket fail to move or are too slow………………………..206
Traveling………………………………………………………………207
Traveling fails……………………………………………………..207
Right or left travel speed decelerates and the machine veers to one side…..209
Operating temperature of the travel system is too high…………………..210
2nd speed travel is not possible………………………………………212
Lift arm……………………………………………………………….214
Arm cylinder fails…………………………………………………..214
Arm cylinder is slow or the power is insufficient……………………….216
When the control lever is pulled slowly, the lift arm drops once………….218
Spontaneous drop of the lift arm is too large…………………………..219
Bucket…………………………………………………………………220
Bucket cylinder fails to move…………………………………………220
Bucket cylinder is slow or the power is insufficient…………………….222
Spontaneous drop of the bucket is too large…………………………….224
Auxiliary hydraulics…………………………………………………….225
Proportional control is not possible…………………………………..225
HST pump……………………………………………………………….226
Gear pump………………………………………………………………228
Control valve…………………………………………………………..229
SUB valve………………………………………………………………231
Self-level valve………………………………………………………..232
Pilot valve…………………………………………………………….233
Proportional control solenoid valve……………………………………….234
Cylinders………………………………………………………………235
Travel motor……………………………………………………………236
Air conditioner system…………………………………………………..239