TM 5-3820-241-34
1 Oil filler cap assembly
12 Exhaust cap deflector
23 Hex head capscrew
2 Oil drain pipe plug
13 Valve assembly
24 Washer
3 Oil level pipe plug
14 Rotary valve housing
25 Counterbalance
4 Oil level cock
15 Straight pin
26 Retaining ring
5 Hex head capscrew
16 Piston pin
27 Connecting rod
6 Lockwasher
17 Piston
28 Bushing
7 Cylinder assembly
18 Compression ring
29 Sleeve
8 Cylinder gasket
19 Oil ring
30 Retaining ring
9 Air orifice
20 Crankshaft assembly
31 Ball bearing
10 Hex head capscrew
21 Headless setscrew
32 Ball bearing
11 Lockwasher
22 Taper pin
33 Motor housing
Figure 6-1.
Tramming motor, disassembly and reassembly.
(2) Wedge two screw drivers between the
valve housing (14) and motor housing (33) to pry
the valve housing loose.
(3) If cylinder (7) is tight in the housing, use
a rubber or plastic mallet to free them.
(4) Rotate the crankshaft (20) to bring each
piston pin (16) above the motor housing (33), then
push out the pin and remove the piston (17).
(5) Pull the crankshaft (20) with attached
6-2
connecting rods (27) out of the motor housing (33)
by shifting the connecting rods to clear the
cylinder holes.
6-3. Tramming Motor, Cleaning, Inspection and
Repair
a. Cleaning. Clean all parts except the
bearings and gasket in cleaning solvent (FED
SPEC PD 680) and dry thoroughly.
