Table 1. Unit Preventive Maintenance Checks and Services (PMCS) for 621B Scraper-continued

Table 1. Unit Preventive Maintenance Checks and Services (PMCS) for 621B Scraper-continued - TM-5-3805-248-23-10278

Table 1. Unit Preventive Maintenance Checks and Services (PMCS) for 621B Scraper-continued - TM-5-3805-248-23-10280

TM-5-3805-248-23-1 Scraper Earth Moving Motorized Diesel Engine Driven Model 621B Manual
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TM 5-3805-248-23-1

UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - CONTINUED

0020 00

Table 1. Unit Preventive Maintenance Checks and Services (PMCS) for 621B Scraper - Continued.

LOCATION

ITEM TO

ITEM

MAN-

CHECK/

NOT FULLY MISSION

NO.

INTERVAL

HOURS

SERVICE

PROCEDURE

CAPABLE IF:

1000 Hours

Air Dryer

Replace desiccant (WP 0301 00).

or Semi-

Annually

1000 Hours

ROPS

Re-torque bolts to 545 lb-ft (739 Nm)

or Semi-

(WP 0203 00).

Annually

1000 Hours

Transmis-

a. Change oil (WP 0128 00).

or Semi-

sion

Annually

b. Clean screens (WP 0131 00 and WP

0133 00).

c. Clean transmission breather (WP

0132 00).

1000 Hours

Differential

Clean breather or replace as necessary

or Semi-

(WP 0143 00).

Annually

2000 Hours

Valve Lash

Adjust valve lash (WP 0265 00).

or Annually

Adjustment

2000 Hours

Cooling Sys-

Change coolant filter (WP 0042 00).

or Annually

tem

0020 00-5

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