Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Main Control Valve Body

DISASSEMBLY (MAIN CONTROL VALVE BODY)

NOTE:
^ Each valve should slide in/out under its own weight.
^ When a valve win not slide in/out under its own weight, depending on valve, push it out with a wire or replace valve body open-side down and lightly tap it with a soft hammer.
^ If a valve surface or bore is scratched or damaged, replace control valve body.
^ Do not drop or lose valves or internal parts.
^ Before assembly, make sure an parts are thoroughly clean.
^ Apply ATF to all parts and bores.
^ Note proper direction of valves and internal parts.
^ Do not reuse any part that has been dropped.
^ Wrap a screwdriver or rod with tape before using it to insert a valve.

1. Disassemble in order shown in figure.





COMPONENT

INSPECTION








1. Measure spring free lengths.
2. If not within specification, replace spring(s).

RE-ASSEMBLY
1. Insert 3-4 shift spring, 3-4 shift valve and stop plug. Secure them with stop pin.
2. Insert low reducing spring, low reducing valve and stop plug. Secure them with stop pin.





3. Insert 1-2 shift spring, 1-2 shift valve and stop plug. Secure them with stop pin.





4. Insert pressure regulator valve, pressure regulator spring, pressure regulator spring seat, regulator plug sleeve, pressure regulator plug and stop plug. Secure them with roll pin.
5. Insert 2-3 timing valve and 2-3 timing spring. Secure them with spring retainer.





6. Proceed to insert manual valve.