6 (GH) - G35M-R / G66M-R gearbox — MAZDA

🧭 Before you start

Fits: platform codes 1.8, MZR, |, 2.0, CITD, DPF, 2.2, 2.5, 16V

• Opens: coolant, power steering fluid, gearbox oil
• Timing position: the crankshaft or camshaft is set and locked during this job
• Special tools named: locking pin

🔧 Engine codes this applies to

📋 Procedure

Preparation and removal

1. Disconnect the battery
2. Oxygen sensor
3. Cross member:
4. Thread-locking compound:
5. Engine support tool:

6. Remove the air filter together with the air duct and resonance duct
7. Drain the coolant
8. Disconnect the two water hoses leading to the throttle body
9. Remove the air filter/throttle body air hose
10. Remove the throttle body
11. Remove both front wheels
12. Remove both front wheel arch liners
13. Remove the engine lower covers
14. Remove the middle exhaust pipe
15. Remove the underbody cover
16. Remove the oxygen sensors
17. Remove the front exhaust pipe
18. Lock the steering wheel in centre position
19. Disconnect the steering column from the steering box
20. Drain the power steering fluid
21. Collect the escaping fluid in a container
22. Disconnect the power steering pump lines
23. Remove the cross member
24. Disconnect the connector
25. Disconnect the mounting clips
26. Remove the locking pin
27. Remove the headlight levelling sensor
28. Disconnect the wheel speed sensors
29. Unclip the brake hose(s)
30. Disconnect the steering arm ball joints from the wheel bearing housings
31. Use a special tool:
32. Remove the power steering pump
33. Remove the shock absorber lower bolts
34. Remove the lower suspension arms
35. Remove the pendulum support
36. Unclip the coolant pipe support bracket
37. Loosen the charcoal filter vacuum hose
38. Vehicles with electronic power steering:
39. Remove the electronic control unit support
40. All vehicles:
41. Remove the cross member
42. Disconnect the stabiliser link(s)
43. Place a trolley jack under the subframe
44. Remove the subframe support plates
45. Remove the subframe together with the anti-roll bar
46. Drain the gearbox oil
47. Collect the escaping fluid in a container
48. Disconnect the earth cable from the gearbox
49. Disconnect the reversing light switch from the gearbox
50. Disconnect the neutral position sensor
51. Disconnect the gearbox wiring
52. Disconnect the wiring loom bracket
53. Disconnect the gear-shift cables from the gearbox
54. Remove the gear-shift control bracket
55. Remove the clutch slave cylinder
56. Note: Without disconnecting the lines, place the hydraulic pump aside
57. Remove the heater hose bracket
58. Disconnect the starter motor electrical connections
59. Remove the starter motor
60. Remove the engine/gearbox upper attaching bolts
61. Remove the drive shaft nuts
62. Unclip the brake hose(s)
63. Remove the front drive shafts
64. Engine support bracket:
65. Remove the vacuum reservoir (if equipped)
66. Fit the special tool to support the engine

Installation and checks

67. Refill the cooling system
68. Check the headlight levelling sensor
69. Refill the gearbox
70. Wheel bolts
71. Check that the reversing light only operates in the 'R' position
72. Cross member:
73. Subframe support:
74. Lower the gearbox slightly
75. Starter motor
76. Intermediate drive shaft
77. Bolts, gearbox support:
78. Bolt, gearbox support:
79. Engine to gearbox:

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