TM 5-4930-207-34
CHAPTER 1
INTRODUCTION
S e c t i o n I. GENERAL
which are to be used by maintenance personnel at
1 - 1 . Scope
all levels are listed in and prescribed by TM
a. This manual is published for the use of direct
38-750.
support and general support maintenance per-
b. Report of errors, omissions, and recommen-
sonnel maintaining the Henry Spen Model
d a t i o n s for improving this publication by the
901765-1 Lubricating and Servicing Unit. It pro-
individual user is encouraged. Reports should be
vides maintenance information beyond the scope
s u b m i t t e d on DA Form 2028 (Recommended
of the tools, equipment, personnel, or supplies
Changes to Publications), and forwarded direct
normally available to using organizations.
to the Commanding General, U.S. Army Mobility
Equipment Command, ATTN: AMSME-MPP,
1-2. Forms and Records
4 3 0 0 Goodfellow Boulevard, St. Louis, Mo.
69120.
a. Maintenance forms, records, and reports
D E S C R I P T I O N AND DATA
Section Il.
b. Tabulated Data.
1 - 3 . Description
(1) Refer to TM 64930-207-12 for complete
TM 5-4930-207-12 provides a general description
tabulated data of the lubricating unit,
of the unit; a more detailed description of specific
(2) Engine data. Refer to TM 5-280S-203-
components and assemblies is contained in the
14 for tabulated data related to the gasoline en-
applicable sections of the manual.
gine, model 4A032-11.
(3) Compressor nut and torque data.
Cylinder Head ---------------55 ft-lbs.
Cylinder:
This manual covers only the Henry Spen & Co.
Nuts --------------------------12 ft-lbs.
Model 901765-1 Lubricating and Servicing Unit.
Studs --------------------------------55 ft-lbs.
No known unit differences exist for the model
Connecting Rod -------------25 ft-lbs.
Valves -------------------------20 ft-lbs.
covered by the manual.
(4) Wiring diagram. Refer to TM 5-4930-
207-12 for wiring diagram.
1-5. Tabulated Data
(5) Repair and replacement standards. Fig-
a. General. This paragraph contains all over-
haul data pertinent to direct support and general
sizes, tolerances, desired clearances, and maximum
support maintenance personnel.
allowable wear and clearances for the compressor
assembly.
Table 1-1. Compressor Clearance and Fitting Requirement
Low pressure piston
High pressure piston
4-1/8
(2-1/8)
.001-.002
Rod bearing to crank
.001-.002
Piston pin to piston
Light tap fit
Light tap fit
.0001-.0006 press
.0001-.0005 press
.006-.0010
Piston pin to rod bearing
.006-.0010
Piston side clearance
.006 feeler gauge
.002 feeler gauge
Piston ring end gap
.012-.025
.007-.017
Piston ring side clearance
.002-.004
.002-.004
Crankshaft end play
.007-.020
.007-.020
1-1
