CHAPTER 4. DIRECT AND GENERAL SUPPORT AND DEPOT MAINTENANCE INSTRUCTIONS

CHAPTER 4

DIRECT AND GENERAL SUPPORT AND DEPOT MAINTENANCE INSTRUCTIONS

Section I. GENERAL

4-2. Record and Report Forms

4-1. Scope

For record and report forms applicable to direct and

These instructions are published for the use of direct

general support and depot maintenance, refer to TM 38-

and general support and depot maintenance personnel

750.

maintaining the Carver Model K906MP Centrifugal

Pumping Unit.

They provide information on the

Note. Applicable forms, excluding Standard

maintenance of the equipment, which is beyond the

Form 46 which is carried by the operator, shall be

scope of tools, equipment, personnel, or supplies

kept in a canvas bag mounted on equipment.

normally available to using organizations.

Section II. DESCRIPTION AND TABULATED DATA

Flywheel bolts ................................ ....... 68 ft-lbs

4-3. Description

Main bearing bolts............................... 112 ft-lbs

For a complete description of the pumping unit, see

Pulley crankshaft................................ . 100 ft-lbs

paragraph 1-3.

c. Adjustment Data.

4-4. Tabulated Data

Valves (Engine cold)

a. General. This paragraph contains all the overhaul

Intake................................ ................ 007-.009

data pertinent to direct and general support and depot

Exhaust................................ ............. 021-.023

maintenance personnel. For wiring diagram refer to

d. Pumping Unit Repair and Replacement Standards.

figure 1-3.

Refer to table 4-1 for repair and replacement standards.

b. Nut and Bolt Torque Data.

Cylinder head bolts and nuts .............. 100 ft-lbs

Connecting rod nuts.............................. 58 ft-lbs

Table 4-1. Repair and Replacement Standards

Manufacturer's

Maximum

dimensions and

allowable

Component

tolerances in inches

Desired clearance

wear and

clearance

Minimum

Maximum

Minimum

Maximum

PUMP:

Rear wear ring inside dia.

6.513

6.516

Rear impeller hub wearing dia.

6.500

6.501

Front wear ring inside dia.

6,263

6.266

Front impeller hub wearing dia.

6.250

6.251

ENGINE:

Pistons

Piston land clearance with bore

Top land

.023

.0285

2nd land

.023

.0285

3rd land

.023

.0285

4-1