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

Brake Proportioning/Combination Valve

^ With front pressure @ 3,434 kPa (498 psi), rear pressure should be 3,434 kPa (498 psi).

^ With front pressure @ 5,396 kPa (783 psi), rear pressure should be 3,630 to 4,218 kPa (527 to 612 psi).

^ With front pressure @ 9,810 kPa (1,424 psi), rear pressure should be 4,513 to 5,494 kPa (655 to 797 psi).