TM-9-2320-273-34

TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

DECEMBER 1980
TM-9-2320-273-34

  TM-9-2320-273-34 - Page 730 of 801

TM 9-2320-273-34
CHAPTER 21
REPAIR OF POWER TAKEOFF AND ADAPTER
21-1. Description.
The power takeoff and the adapter unit (fig.21-1) are driven by the transmission to
supply auxiliary power for the following:
a.
M916 and M920 – Drives a hydraulic pump for winch hydraulic power.
b.
M917 – Drives a hydraulic pump which supplies power for the dump body hoist.
c. M918 – Powers a drive shaft which supplies the drive for bituminous spreader operating
components.
d.
M919 – Powers a drive shaft which supplies the drive for all mixer operating components.
e.
The adapter is a single shaft gear unit that transfers drive from the transmission to the PTO. The
shaft is supported by two roller bearings. The adapter is identical on all M916 thru M920 vehciles.
f. The PTO is a single speed, two gear unit. The unit is engaged or disengaged by mechanical
linkage from the cab.
g.
The adapter and the PTO are lubricated internally by transmission oil and require no servicing.
21-2. Removal (M916, M917 and M920).
a.
Remove two capscrews (M916 and M920) or four capscrews (M917) that fasten hydraulic pump
to the PTO (fig. 21-1) and disconnect the hydraulic pump from the PTO. It is not necessary to remove
the hydraulic lines from the pump.
b.
Disconnect PTO control cable from shifter lever. (Refer to TM 9-2320-273 -20.)
c.
Remove PTO switch from PTO. (Refer to TM 9-2320-273-20.)
d.
Remove four capscrews and washers that fasten the PTO adapter to the transmission housing
and remove the adapter with the PTO and gasket attached. Measure thickness of the gasket to aid in
installation.
21-3. Removal (M918 and M919).
a.
Disconnect driveshaft and yoke. (Refer to TM 5-3895-371-24 & P (M918) or TM 5-3895-372-20
(M919) for detailed procedures.)
b.
Disconnect PTO control cable from shifter lever. (Refer to TM 9-2320-273-20.)
c. Remove PTO switch from PTO. (Refer to TM 9-2320-273 -20.)
d.
Remove four capscrews and washers that fasten the PTO adapter to the transmission housing
and remove the adapter with the PTO and gasket attached (fig. 21-1). Measure thickness of the gasket to
aid in installation.
21-1


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