M48 Tank
6.16.Withdraw the hydro motor, along with the three motor spacers, and place them gently on a work bench. See Figure 6.16.
Figure 6.16
6.17.If the brake is to be removed, remove the clip that holds the brake arm on the splined shaft, and mark the location of the brake arm on the splined shaft.
Figure 6.17
6.18.Remove the brake arm from the splined shaft.
NOTE: The Hydro motor can be ordered with or without the brake assembly. If an appropriate size press is not available, the dealer should consider ordering hydro motor with the brake assembly attached.
6.19.Safely fixture the hydro motor and brake assem- bly in a minimum 20 Ton press so that the ram presses against the end of the axle, and the assembly is supported by the edge of the brake drum. Press the drum off of the tapered shaft.
6.20.Remove the castle nut and brake drum from the axle. See Figure 6.20.
ORIENTATION MARKS (ARROW TO FITTINGS)
BRAKE 
DRUM
BRAKE
ASSEMBLY
Figure 6.20
6.21.Mark the orientation of the brake assembly on the hydro motor.
6.22.Remove the four socket head cap screws that hold the brake assembly to the hydro motor using a 1/4” allen wrench.
6.23.Transfer the four mounting bolts from the old hydro motor to the new one. Replace any that show signs of wear or damage.
6.24.Position the three motor spacers on the bolts, and install the hydro motor in the TANK.
6.25.Place the motor plate over the end of the bolts, apply Loctite 242 (blue) the the bolts, and install the four nuts. Tighten the bolts to
6.26.Inspect the brake assembly. If there are not signs of significant wear or damage, install the brake on the new hydro motor, using the match marks to maintain the same orientation.
6.27.Use new lock washers and / or Loctite 242 (blue) when installing the brake assembly. Torque the socket head cap screws to
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