New Holland L35, L775, L778, L779 SkidSteer Service Manual

Table of Content (Workshop Manual)

FOREWORD ………………………………………………………………………….. 2
SAFETY ……………………………………………………………………. 3, 5, 6 and 7
INTRODUCTION ……………………………………………………………………… 8
SERVICING VICKERS-EQUIPPED LOADERS ………………………………………….. 10
SECTION 1 – VICKERS TRANSMISSION REMOVAL …………………………………… 10
SECTION 2 – HYDROSTATIC TRANSMISSION OPERATION …………………………… 14
SECTION 3 – VICKERS TRANSMISSION DISASSEMBLY ………………………………. 16
SECTION 4 – VICKERS TRANSMISSION PUMP AND MOTOR SHIMMING ………………. 31
SECTION 5 – SHIMMING PROCEDURE FOR VICKERS FOUR-WAY GEAR BOX ………….. 34
SECTION 6 – VICKERS STEERING CONTROL ADJUSTMENTS ………………………… 40
SECTION 7 – VICKERS VANE PUMP REMOVAL, INSPECTION AND INSTALLATION …….. 47
SECTION 8 – PROPORTIONAL FLOW DIVIDER ……………………………………….. 54
SECTION 9 – STEERING CYLINDER REBUILDING ……………………………………. 56
SERVICING CESSNA-EQUIPPED LOADERS …………………………………………… 60
GENERAL INFORMATION …………………………………………………………… 60
SECTION 1 – CESSNA TRANSMISSION REMOVAL ……………………………………. 62
SECTION 2 – CESSNA TRANSMISSION OVERHAUL …………………………………… 70
SECTION 3 – CESSNA TRANSMISSION OIL LEAKS …………………………………… 90
SECTION 4 – SHIMMING FOUR-WAY GEAR BOX ……………………………………… 98
SECTION 5 – SYSTEM CLEANING PROCEDURE AFTER TRANSMISSION OVERHAUL ….. 108
SECTION 6 – HYDRAULIC RESERVOIR AND CHECK VALVE ASSEMBLY ………………. 104
SECTION 7 – STEERING NEUTRALIZER REPAIR ……………………………………. 111
SECTION 8 – CESSNA STEERING CONTROL ADJUSTMENTS ………………………… 113
SECTION 9 – CESSNA GEAR PUMP REMOVAL, INSPECTION AND INSTALLATION ……. 115
GENERAL INFORMATION – VICKERS AND CESSNA-EQUIPPED
SKID-STEER LOADERS ……………………………………………………………. 125
SECTION 1 – START-UP PROCEDURE ………………………………………….. 125
SECTION 2 – FINAL DRIVE DISASSEMBLY AND ASSEMBLY ……….. 128
SECTION 3 – HYDRAULIC SYSTEM PRESSURE CHECKS …………….. 144
SECTION 4 – SERVICING THE CONTROL VALVE ………………………… 150
SECTION 5 – REBUILDING BUCKET AND BOOM CYLINDERS …….. 153
SECTION 6 – ELECTRICAL SYSTEM ……………………………………………. 164
SECTION 7 – BOOM LOCKOUT …………………………………………………… 172
SECTION 8 – FUEL TANK REMOVAL ………………………………………….. 176
SECTION 9 – SPECIFICATIONS – L-35 LOADER, L-775 LOADER
L-778 LOADER, L-779 LOADER …………………………………………………… 183
SECTION 10 – HYDRAULIC CIRCUIT DIAGRAMS ……………………….. 189
SECTION 11 – TROUBLE SHOOTING …………………………………………… 194
SECTION 12 – TORQUE CHARTS ………………………………………………… 205
ADJUSTABLE FITTINGS ……………………………………………………………. 208
BITE-TYPE FLARELESS FITTINGS …………………………………………….. 209
TUBE FITTING TROUBLE SHOOTING ……………………………………….. 210
INDEX ………………………………………………………………………………………. 211

The Manual Preface

This manual provides in condensed form, service and maintenance information which will serve to guide a serviceman when repairing or rebuilding Sperry loaders in the shop and to help him when diagnosing and correcting service difficulties in the field.

Sections of the Manual

The Manual is into main groups and subgroups, and covers any previous version of the machine. Any additions or modifications which can happen at a later date are not describe in this manual. The required information can easily be found by referring to the table of contents. For reasons of clarity, some of the illustrations are present in simplified form. Differences from the actual version of this manual are therefore possible if this adds to the clarity of the information.

Repair and Parts

Carry out any necessary repair work as soon as possible. This reduces repair costs and increases the availability while doing any work on the loader, always observe the instructions given in the manual. Extensive works not described in this Workshop Manual will gladly be executed for you by your dealer. Always use original spare parts only.