Honda Accord: Synchro Ring and Gear Inspection - Manual Transmission - Transaxle - Honda Accord MK8 2008-2012 Service ManualHonda Accord: Synchro Ring and Gear Inspection

1. Inspect the synchro rings for scoring, cracks, and damage (A).

Example of synchro ring teeth


Example of synchro ring teeth

    
2. Inspect the inside of each synchro ring (B) for wear.


2. Inspect the inside of each synchro ring (B) for wear.

Inspect the teeth (C) on each synchro ring for wear (rounded off).

3. Inspect the teeth (A) on each synchro sleeve and matching teeth on each gear for wear (rounded off).

Example of synchro s l e e v e teeth and gear teeth


Example of synchro s l e e v e teeth and gear teeth

  
4. Inspect the synchro teeth on gear for scoring, cracks,


4. Inspect the synchro teeth on gear for scoring, cracks, and damage (A).

5. Inspect the thrust surface (B) on each gear hub for


5. Inspect the thrust surface (B) on each gear hub for wear.

6. Inspect the cone surface (C) on each gear hub for wear and roughness.

7. Inspect the teeth on all gears (D) for uneven wear, scoring, and cracks.

8. Coat the cone surface of each gear with MTF, and place its synchro ring on it. Rotate the synchro ring, making sure that it does not slip.

9. Measure the clearance between each gear (A) and its synchro ring (B) all around the gear. Hold the synchro ring against the gear evenly while measuring the clearance. If the clearance is less than the service limit replace the synchro ring and gear.

Synchro Ring-to-Gear Clearance

Standard: 0.70-1.49 mm (0.028-0.059 in)

Service Limit: 0.4 mm (0.02 in)

Double Cone Synchro and Triple Cone

Synchro-to-Gear Clearance

Standard:

Synchro Cone (C): Outer Synchro Ring (B) to
Synchro Cone (C)

Double Cone Synchro (3rd gear)

0.46-0.97 mm (0.018-0.038 in)

Double Cone Synchro (4th gear)

0.70-1.19 mm (0.028-0.047 in)

Triple Cone Synchro

0.70-1.19 mm (0.028-0.047 in)

(A): Synchro Cone (C) to Gear
(A)

Double Cone Synchro (3rd gear)

0.51-1.07 mm (0.020-0.042 in)

Double Cone Synchro (4th gear)

0.50-1.04 mm (0.020-0.041 in)

Triple Cone Synchro

0.50-1.04 mm (0.020-0.041 i n)

(B) to Gear (A):

Outer Synchro Ring
(B) to Gear (A)

0.95-1.68 mm (0.037-0.066 in)

Service Limit:

: 0.3 mm (0.01 in): 0.3 mm (0.01 in)


: 0.6 mm (0.02 in): 0.3 mm (0.01 in)


: 0.6 mm (0.02 in)


Synchro ring-to-gear


Synchro ring-to-gear

Double cone synchro and triple cone synchro-to-gear


Double cone synchro and triple cone synchro-to-gear


    Synchro Sleeve and Hub Inspection and Reassembly
    1. Inspect the gear teeth on all synchro hubs and synchro sleeves for wear (rounded off corners). 2. Install each synchro hub (A) in its mating synchro sleeve (B), and check for free movement. Ma ...

    Mainshaft Bearing and Oil Seal Replacement
    Special Tools Required - Oil Seal Driver, 65 07JAD-PL90100 - Adjustable Bearing Puller, 20-”40 mm 07736-A01000B - Bearing Driver Attachment, 42 x 47 07746-0010300 - Driver Handle, 15 x 135L ...

    See also:

    Power Assist Check
    tires and wheels at the correct tire pressure. 1. Check the power steering fluid level (see page 17-28). 2. Start the engine, let it idle, and turn the steering wheel from lock to lock several ...

    Steering Gearbox Overhaul
    Exploded View Special Tools Required -Cylinder End Seal Remover Attachment 07TAF-SZ50100 -Valve Seal Ring Sizing Tool 07NAG-SR3090A -Sleeve Seal Guide, 35.9 x 37 07YAG-S2X0100 -Sizing Tool, ...

    Clutch Hose Replacement
    NOTE: - Replace the clutch hose if it is twisted, cracked, or leaks. - Use fender covers to avoid damaging painted surfaces. - Do not spill brake fluid on the vehicle; it may damage the pain ...