Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Component Disassembly & Reassembly: Countershaft: Reassembly
2004 Acura 3.5RLSECTION Reassembly
NOTE:
Countershaft 2nd gear and 4th gear clearance must be checked during reassembly.
- Install components on countershaft without installing "O" rings on countershaft. See Figure and Figure .
- Install used lock nut on countershaft. Tighten lock nut to 22 ft. lbs. (30 N.m). To check countershaft 4th gear clearance, hold 1st-hold clutch against reverse clutch.
- Using feeler gauge, measure countershaft 4th gear clearance between 1st-hold clutch and 1st-hold clutch distance collar (selective fit). See Fig 1.
- Countershaft 4th gear clearance should be 0-.003" (0-.08 mm). If countershaft 4th gear clearance exceeds .003" (.08 mm), install different thickness 1st-hold clutch distance collar and recheck clearance. Countershaft 1st-hold clutch distance collar ranges in thickness from 2.835" (72.00 mm) to 2.854" (72.50 mm) in .002" (.05 mm) increments.
- To check countershaft 2nd gear clearance, install dial indicator on countershaft so stem of dial indicator is resting against countershaft 2nd gear. See Fig 1.
- Measure countershaft 2nd gear clearance while holding countershaft 1st gear toward reverse clutch. Measure countershaft 2nd gear clearance in 3 different places.
- Use average reading as countershaft 2nd gear clearance. Countershaft 2nd gear clearance should be .002-.005" (.05-.13 mm).
- If countershaft 2nd gear clearance is not within specification, install different thickness thrust washer between countershaft 2nd gear and parking gear. Countershaft 2nd gear thrust washers range in thickness from .051" (1.30 mm) to .075" (1.90 mm) in .002" (.05 mm) increments. Recheck countershaft 2nd gear clearance.
- Once correct gear clearances are obtained, disassemble countershaft. Lubricate all components with ATF. Wrap splines of countershaft with tape. Install NEW "O" rings on countershaft. Reassemble countershaft. Ensure thrust needle bearings are installed with unrolled edge of bearing retainer facing washer.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.