Control Valve Upper Body

Part 1:

Part 2:

COMPONENTS

DISASSEMBLY




1. Remove valves at parallel pins.
Do not use a magnetic hand.




a. Remove parallel pins while pressing their corresponding plugs and sleeves.
Remove plug slowly to prevent internal parts from jumping out.




b. Place mating surface of valve facedown, and remove internal parts.
- If a valve is hard to remove, place valve body facedown and lightly tap it with a soft hammer.
- Be careful not to drop or damage valves and sleeves.

2. Remove valves at retainer plates.




a. Remove retainer plates while pressing their corresponding plugs, sleeves or springs.




b. Place mating surface of valve facedown, and remove internal parts.
- if a valve is hard to remove, lightly tap valve body with a soft hammer.
- Be careful not to drop or damage valves, sleeves, etc.

INSPECTION

Inspection Standard:

Valve springs
- Measure free length and outer diameter of each valve spring. Also check for damage or deformation.
- Numbers of each valve spring listed in table below are the same as those in the figure on AT-108.
- Replace valve springs if deformed or fatigued.

Control valves
- Check sliding surfaces of valves, sleeves and plugs.

ASSEMBLY




1. Lubricate the control valve body and all valves with A.T.F. install control valves by sliding them carefully into their bores.
Be careful not to scratch or damage valve body.




- Wrap a small screwdriver with vinyl tape and use it to insert the valves into proper position.




- Pressure regulator valve - Position plug in sleeve and install pressure regulator valve on upper body.




2. Install parallel pins and retainer plates.




- While pushing plug, install parallel pin.




- insert retainer plate while pressing their corresponding plugs, sleeves or springs