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

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Brake Pressure Hold Valve: Testing and Inspection

Fig. 5 Hill holder (PHV) valve:

1. Inspect PHV cable boots and outer casing for damage, replace as necessary.
2. Inspect PHV cable inner core for corrosion and wear, replace as necessary.
3. Inspect PHV return spring for damage or corrosion.
4. Tilt PHV assembly and listen for ball rolling to ensure free operation.
5. Operate lever to ensure smooth operation. Do not attempt to disassemble PHV. If unit is defective, it should be replaced.