2244 W McDowell
Phoenix, AZ 85009
1-800-274-RACE
FAX: 602-340-8429
602-257-9591
HP2211 – TH400 Full Manual Valve Body
This valve body has been designed in a competition application only.
If you need any kind of technical help or assistance, please feel free to call us any time.
Follow these directions carefully. If you do not understand something, please call and
ask. Ninety-five percent of all of our warranty problems are due to mistakes made during
installation.
Enclosed in your package should be the following parts. Please check to make sure that
you have everything that you need.
(1) TH400 valve body and separator plate
(2) Valve body gaskets
(3) Pressure regulator spring
(4) Check balls
If you are installing this product into a racing transmission that is all ready finished, we
recommend that you secure the services of an experienced transmission re-builder in your
local area. If you are installing this product yourself, and you are not experienced in
working with TH400’s, please get some type of transmission manual to help you.
This guide is written to assist you in the installation of this product. It is not intended to
be a transmission-rebuilding guide.
STEP 1. Remove the stock valve body, separator plate and gaskets. If you have
governor supply tubes, remove and discard them.
STEP 2. Locate the pressure regulator snap ring in the case near the selector lever
linkage. Push up on the booster sleeve and remove the snap ring. Slowly lower the
booster sleeve assembly. The unit is under spring tension. Be careful when handling
these parts to prevent injury from parts flying out. You may have to tap on the sleeve to
free it from the bore. Remove the booster sleeve and valve, pressure regulator spring,
spring retainer, spacers (on some models), and the pressure regulator valve. Replace
OEM pressure regulator spring with spring supplied in kit. Discard any spacers. To
install the assembly, slip the retainer in place with the tangs toward the spring. Slip the
spring over the small end so it comes in contact with the retainer. Push the entire
assembly up into the case. Push up on the booster sleeve and install the snap ring. Make
sure it seats completely into the groove.
