1.2.3 Gaskets and Seals
Gaskets, oil seals, preformed packing, and seals should be replaced instead of being
cleaned and reused, unless otherwise specified by local directives. Replace any seals and
packings that show any deterioration or damage.
Use repair kits when available.
1.2.4 Reassembly and Installation
Unless otherwise specified, reassembly and installation are the reverse of removal and
disassembly. Use the illustrations in parts manual chapter for reference.
1.3 ENGINE REPAIR AND MAINTENANCE
Refer to the operator’s manual supplied by the engine manufacturer (supplied with this
manual) for instructions. More detailed “shop” manuals may be special-ordered from
NMC or can be obtained from a local distributor.
1.3.1 Ordering Parts
If you need parts for your engine, you must provide the complete engine number, and
tractor description, name, and serial number.
The engine number is stamped on a label fastened to the cylinder block.
1.4 FRONT BRAKES
The brake assemblies must be removed as complete assemblies. They cannot be
disassembled while mounted on the front axle.
NOTE: There is no adjustment for caliper-type brakes.
1.4.1 Friction Pad Removal and Installation (Front)
Figure 1
Never mix new and used pads in the brake assembly.
1. Set parking brake. Using a jack, raise tractor high enough off floor to provide
adequate working space underneath the frame. Support tractor with jack stands.
Be sure that positioning of jack stands does not interfere with work task.
2. Remove wheel.
3. Remove dirt and grease from disc and caliper components by wiping them with a
cloth dampened with clean brake fluid or isopropyl alcohol.
CHAPTER 3 OVERHAUL AUGUST 31, 2008
1 GENERAL REPAIR PAGE 3
M140 Tow Tractor Manual No. 46054
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