TM 10-4610-310-14
DIRECT SUPPORT/GENERAL SUPPORT MAINTENANCE
LIGHTWEIGHT WATER PURIFIER
DIESEL ENGINE
LUBRICATION SYSTEM
CHECKS AND SERVICES
INITIAL SETUP
Tools
Equipment Condition Required
Shop equipment, automotive, common 1 and 2
Crankcase cover removed (WP 0122 00)
Materials/Parts
Oil, lubricating, SAE 10W30 (item 19, WP 0136 00)
Pump, oil, (item 20, WP 0136 00)
GENERAL
This work package contains the instructions for checks and services of the Model L48EE diesel engine
lubrication system used on the high-pressure pump module in the Lightweight Water Purifier (LWP). See WP
0037 00 for Preventive Maintenance Checks and Services (PMCS) scheduled intervals for these items.
LUBRICATION SYSTEM
The diesel engine has a forced oil lubricating system driven by a trochoid oil pump. Lubricating oil is circulated
through the resin 60-mesh lubricating oil filter to the trochoid oil pump, to the crankshaft, and to the crankpin. The
valve rocker arm chamber is splash lubricated. The lubricating oil is SAE 15W40, American Petroleum Institute
grade CC or higher. The lubricating oil capacity is 0.8 Liter (0.85 quart) full/0.25 Liter (0.26 quart) effective.
REMOVAL
1. Remove oil pump cover (6) from crankcase cover (1) by removing three screws (7). See Figure 1.
2. Remove and discard O-ring (4).
3. Remove parallel pin (2) and slide oil pump out of the crankcase cover.
4. Remove outer rotor assembly (4) from inner rotor (3).
5. Remove governor assembly (10) and pin (9).
Figure 1. Oil Pump Maintenance.
