Disassembly and Repair of Upper Guy Ring, AB-621A/G

TM 11-5985-334-34

Figure 2-11. Upper guy ring assembly, exploded view, AB-621/G.

h. Scrape off the excess grease extruded by

a. Replace the guy ring plate (8) by removing the

placement of the casting and replace the guy ring

six screws (1), lockwasher (2), and flat washer (3).

plate.

b. Pick up the assembly with two hands, holding

i. Turn the assembly over and replace the cover

the assembly together and turn the assembly over

(4) lockwasher (2), flat washer (3), and screws (1).

into one hand.

c. Lift off the guy ring plate.

j. After tightening the screws, wipe the assembly

clean with a cloth.

WARNING

Adequate ventilation should be provided

2-18. Disassembly and Repair of Upper Guy

while using TRICHLOROTRIFLUORO-

Ring, AB-621A/G

ETHANE. Prolonged breathing of vapor

(fig. 2-12)

should be avoided. The solvent should not

The upper guy ring is essentially an assembly of the

be used near heat or open flame, the

guy ring plate having a bearing assembly fastened

products of decomposition are toxic and

to it by six screws. The bearing assembly contains

irritating. Since TRICHLOROTRI-

roller bearings packed in grease; therefore, the work

FLUOROETHANE dissolves natural

surface used for disassembly must be clean.

oils, prolonged contact with skin must be

a. Replace the guy ring plate (8) by removing the

avoided. When necessary use gloves

six screws (11), lockwasher (2), and flat washer (3).

which the solvent cannot penetrate. If the

b. Pick up the assembly with two hands, holding

solvent is taken internally, consult a

the assembly together and turn the assembly over

physician immediately.

into one hand.

d. Separate and clean the guy ring race (5),

c. Lift off the guy ring plate.

bearings (6), and casing (7) with trichlorotrifluoro-

WARNING

ethane.

Adequate ventilation should be provided

e. To reassemble the parts, pack the outer wall

when using TRICHLOROTRIFLUORO-

and flange of the guy ring race with Grade 2

ETHANE. Prolonged breathing of the

graphite grease per Federal Specification

vapor should be avoided. The solvent

VV-G-671.

should not be used near heat or open

f. Stick 26 bearings (6) against the greased outer

flame, the products of decomposition are

surface and flange of the guy ring race.

toxic and irritating. Since TRICHLORO-

g. Replace the casing (7) over the bearings.

2-18