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SERIES 60 FRONT MOUNTED POWER TAKE-OFF

Detroit Diesel Corporation (DDC) has a front mounted PTO, for use on the Series 60 vehicle engines. See Figure 20543 . ‪

1. Retainer ‪

4. Pulley Assembly ‪

2. Bolt ‪

5. Crankshaft ‪

3. Hub Assembly ‪

Front Mounted Power Take-off Components

This PTO is available in two different models, adaptable to Spicer 1310 and Spicer 1350 drive shafts depending on the torque and horsepower requirements. Maximum torque and horsepower for the two PTO assemblies are listed in Table . ‪

Power Take-off Models

Engine Speed

Torque

Horsepower

Spicer 1310 ‪

1800 r/min ‪

162.7 Nm (120 lbft) ‪

30.6 kW (41 hp) ‪

Spicer 1310 ‪

2100 r/min ‪

158.7 Nm (117 lbft) ‪

29.8 kW (40 hp) ‪

Spicer 1350 ‪

1800 r/min ‪

261.7 Nm (193 lbft) ‪

57.4 kW (77 hp) ‪

Spicer 1350 ‪

2100 r/min ‪

253.6 Nm (187 lbft) ‪

56.0 kW (75 hp) ‪

Torque and Horsepower for the Front Mounted Power Take-off Assemblies

Note: These torque and horsepower values are the maximum available taken at three degrees shaft angle. Any increase in the shaft angle has a direct negative effect on the amount of available torque and horsepower, as well as shaft life.

Also, any new application must have a "Torsional Analysis" performed by the DDC Engineering Department. ‪

The PTO drive shaft must be purchased through Spicer Universal Joint Division, Dana Corporation. ‪

If a PTO adaptor kit is to be installed on an engine that has been in service, it will be necessary to remove the standard pulley configuration and replace it with one of the PTO adaptor kits. ‪

Perform the following steps to install the new PTO assembly: ‪

  1. Remove the six bolts that retain the standard crankshaft pulley: refer to section .
  2. Install the new PTO pulley; refer to section . Use the new bolts and washer provided with the PTO adaptor kit.
  3. Install the new hub insulator assembly inside the new pulley assembly ensuring that the slot on the backside of the hub fits over the dowel in the pulley.
  4. Install the new 1 in. - 14 x 3.50 in. long bolt and retainer after coating the bolt threads and underside of the bolt head with International Compound #2. Torque the bolt to 610 Nm (450 lbft).

Repair and Replacement for the Front Mounted Power Take-off Assembly

The front mounted power take-off assembly is a nonserviceable component; tag for remanufacture. ‪

Removal of Front Mounted Power Take-off

Perform the following steps to remove the PTO assembly: ‪

  1. Remove the inspection plug in the bottom of the flywheel housing and install the J 36375A ; see Figure 20172 .

    Flywheel Lock

  2. Thread the center screw of the J 36375A into the flywheel housing until the tip of the tool rests between two teeth of the flywheel ring gear. Finger-tighten the knurled knob; see Figure 24013 .

    Flywheel Lock Location

    Note: It may be necessary to bar the engine over so that the tool center screw is exactly between two teeth.

  3. Remove the PTO hub assembly attaching bolt and retainer.
  4. Remove the PTO hub assembly.
  5. Remove the PTO/crankshaft pulley; refer to section .
Inspection of Front Mounted Power Take-off

Visually inspect the PTO hub contact surfaces for galling or burrs. To correct surfaces that have damage, smooth these surfaces with emery cloth or a stone. ‪

Installation of Front Mounted Power Take-off

Perform the following steps to install the PTO assembly: ‪

  1. If removed, install J 36375A , to the inspection plug hole in the bottom of the flywheel housing; see Figure 20172 .
  2. Install the PTO/crankshaft pulley; refer to section .
  3. Install the PTO hub assembly inside of the PTO/crankshaft pulley ensuring the slot on the backside of the hub fits over the dowel in the pulley.
  4. Install the PTO hub assembly attaching bolt and retainer after coating the bolts threads and underside of the bolt head with International Compound #2 or equivalent. Torque the bolt to 610 Nm (450 lbft).