Main Valve Body: Disassembly/Inspection/Reassembly

NOTE:

Clean all parts thoroughly in solvent or carburetor cleaner, and dry with compressed air. Blow out all passages.
Replace the valve body as an assembly if any parts are worn or damaged.
Check all valves for free movement, if any fail to slide freely, see VALVE BODY REPAIR on .
Coat all parts with ATF during assembly.

CAUTION: Do not use a magnet to remove the check balls; it may magnetize the balls.

Fig 1: Exploded View Of Main Valve Body

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: Sectional View Of Main Valve Body

Courtesy of AMERICAN HONDA MOTOR CO., INC.

SPRING SPECIFICATIONS

Unit: mm (in)
No.	Springs	Standard (New)
No.	Springs	Wire Dia.	O.D.	Free Length	No. of Coils
(1)	Relief valve spring	1.1 (0.043)	8.6 (0.342)	37.1 (1.461)	13.4
(2)	Modulator valve spring	1.4 (0.055)	9.4 (0.374)	35.0 (1.378)	10.9
(3)	CPB valve spring	0.9 (0.035)	8.1 (0.322)	47.2 (1.858)	18.3
(4)	1-2 shift valve spring	0.9 (0.035)	7.6 (0.302)	41.3 (1.626)	16.3
(5)	2nd office control valve spring	0.7 (0.028)	6.6(0.262)	34.8(1.370)	22.0
(6)	Servo control valve spring	1.0 (0.039)	8.1 (0.322)	52.1 (2.051)	20.8