TM 9-2320-260-20
13-13. BOLSTER MIDWINCH DRIVECHAIN AND
SPROCKETS MAINTENANCE
THIS TASK COVERS:
d. Sprockets Installation
a. Drivechain Removal
e. Drivechain Installation
b. Sprockets Removal
f. Drivechain Adjustment
c. Cleaning and Inspection
INITIAL SETUP
EQUIPMENT CONDITION
APPLICABLE MODELS
Parking brake set (TM 9-2320-260-10).
M815
GENERAL SAFETY INSTRUCTIONS
MATERIALS/PARTS
Two locknuts
Keep fire extinguisher nearby when using
drycleaning solvent.
Four cotter pins
Two woodruff keys
REFERENCES (TM)
LO 9-2320-260-12
TM 9-2320-260-10
TM 9-2320-260-20P
1. Rotate drivechain (15) to gain access to master link (19).
2. Remove two cotter pins (17), cap (18), master link (19), and dnvechain (15) from midwinch
sprocket (1) and propeller shaft sprocket (10). Discard cotter pins (17).
I
b. Sprockets Removal
1. Remove two locknuts (8) and screws (14) from sleeve bearing (11) and support bracket (16). Discard
locknuts (8).
2. Remove lubrication fitting (13) and remove woodruff key (5), collar (12), and sleeve bearing (11) from
propeller shaft (7). Discard woodruff key (5).
3. Remove setscrew (9) and remove propeller shaft sprocket (10) and woodruff key (6) from propeller
shaft (7). Discard woodruff key (6).
4. Remove two cotter pins (3), shearpin (2), and midwinch sprocket (1) from midwinch shaft (4).
Discard cotter pins (3).
c. Cleaning and Inspection
WARNING
Drycleaning solvent is flammable and will not be used near open
flame. Use only in well-ventilated places. Failure to do so may
result in injury to personnel. Keep fire extinguisher nearby when
using drycleaning solvent.
1. Clean drivechain (15) and sprockets (1) and (10) with drycleaning solvent. Dry drivechain (15), and
spockets (1) and (10) with a clean rag.
2. Inspect all parts for wear and damage. Replace parts if worn or damaged.
13-30