Measure over retainer and/or spacer
Measure over lug
TRANSMISSION HOUSING
TRANSMISSION HOUSING LUG
SPACER OR SPACER AND RETAINER
CONVERTER
AT 540 AT 542 SERIES
AT 545 SERIES AT 1500 SERIES
AT 543 V03007
Figure 3–1. Converter Position Measurements
3–3. INSTALLING PARKING BRAKE AND OUTPUT FLANGE CAUTION: Do not attempt to polish the oil seal contact surface on the flange or yoke. Scratches or machine-type lead can cause seal leakage. • Check the output flange rear oil seal to ensure that it has not been damaged and is free of defects. For replacement instructions, refer to the applicable Allison Transmission Service Manual. Refer to Paragraph 7–2. • Lubricate the oil seal with petrolatum or transmission fluid. • Check the output flange or yoke for damage or wear. Check the oil seal contact surface to ensure it is smooth and free of surface irregularities to prevent fluid leaking past the seal. Rotate the flange during installation to avoid seal lip damage. • Install the parking brake (if so equipped). Tighten the brake mounting bolts to 81–97 lb ft (110–131 N·m). CAUTION: Do not use a hammer or similar tool to install the output flange or yoke onto the transmission output shaft. Internal damage can result. • Lubricate the splines of the shaft and output flange and install the output flange. Ensure the flange hub is seated against the transmission rear bearing.
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