Section III. TEST AND ADJUSTMENT (MODEL WN-7-28)

TM 9-2520-246-34

g. Output shaft front bearing cap and companion

5-7. Assembly Sequence -- Power Takeoff

flange key. (See fig. 5-8.)

(Model WN-7-28).

h. Output and reverse shaft rear bearing cap. (See

a. Shifter shaft boot and seal. (See fig. 5-15.)

fig. 5-7.)

b. Output shaft front bearing. (See fig. 5-14.)

i. Input gearshaft and input gear. (See fig. 5-5 and

5-6.)

c. Reverse gearshaft rear bearing. (See fig. 5-13.)

j. Shifter shaft and shifter fork. (See fig. 5-4.)

d. Reverse gear. (See fig. 5-12.)

k. Power takeoff cover, poppet retainer, and poppet

e. Output shaft and high-speed gear. (See fig. 5-10

spring and ball. (See fig. 5-3.)

and 5-11.)

f . Output shaft rear bearing. (See fig. 5-9.)

Section Ill. TEST AND ADJUSTMENT (MODEL WN-7-28)

b. Adjustments.

5-8. General. Tests and adjustments can either be

accomplished by installation on the vehicle or on a

(1) There are no adjustments on the power

transmission coupled to an engine prepared for a

takeoff assembly.

dynamometer test.

(2) Refer to TM 9-2320-209-20/1 for the power

a. Operation. Test power takeoff WN-7-28 for the

takeoff linkage adjustment.

following

5-9. Lubrication. Lubrication of the power takeoff

(1) Quiet operation.

is provided by the transmission. Refer to LO 9-2320-

(2) Smooth and positive shifting.

209-12/1 for lubrication specifications.

(3) Check for lubricant leaks.

Section IV. REPAIR AND REPLACEMENT STANDARDS (MODEL WN-7-28)

5-10. General. The repair and replacement standards

the limits given in the "Size and Fit of New Parts"

included herein give the minimum, maximum, and key

column. In the "Size and Fit of New Parts" and "Wear

clearance of new parts. The standards also give wear

Limits" columns the letter "L" indicates a loose fit

limits which indicate the point to which a part or parts

(clearance) and the letter "T" indicates a tight fit

may be worn before replacement, in order to receive

(interference).

m a x i m u m service with minimum replacement.

Normally, all parts which have not been worn beyond the

5-11. Repair and Replacement Standard Points

dimensions shown in the "Wear Limits" column, or

of Measurement. Figures 5-16, 5-17, and 5-18 and

damaged by corrosion, will be approved for service. An

corresponding tables 5-1, 5-2, and 5-3 provide the

asterisk (*) in the "Wear Limits" column indicates that

repair and replacement standard points of

the part or parts should be replaced when worn beyond

measurement for power takeoff model WN-7-28.

5-7