PREVOST H3-41 Maintenance Manual page 721

SYMPTOMS
DOOR LOCKS DO NOT LOCK
WHEN DOOR IS CLOSED.
Lubrication
•
Part

Latches

Upper door catch

Door cylinder rod
end with bearing grease
fitting

Door locking
mechanism

Key hole

Damper pins

Hinges
Entrance Door Body Panel and Window
•
Window
For the removal of entrance door window, you
will need:
Pneumatic hammer tool (Zip Gun);
Razor sharp window scraper;
"Olfa" knife;
Face shield.
• Open entrance door.
Mark the position of the entrance door
•
window for future reference.
• Remove interior finishing panel.
From inside of vehicle, cut Sika bead around
•
window perimeter using a "Zip gun" while
another person hold the window from the
outside.
NOTE
Wear ear plugs during this operation.
Then, move outside of vehicle and cut Sika
•
bead to free window while somebody else
hold the window from the inside.
Carefully remove window from frame, ask
•
for help if needed.
PROBABLE CAUSES
Emergency valve is open.
Lock solenoid stays electrified.
Lock solenoid works in reverse.
Relay does not function.
Lubricant Frequency
Low
Every six
temperature
months
grease
Every six
White
months
grease
Every six
Low
months
viscosity oil
Close emergency valve.
Check latch bolt ground on door frame. If
needed clean locks for better contact. Check
ground circuit.
Reverse air hoses at solenoid locks.
Replace relay.
Using a razor sharp window scraper, remove
•
Sika bead and double-face self-adhesive
tape residue from window frame.
• Clean window using window cleaner.
Apply
•
perimeter.
• Clean door frame using anti-silicone.
Using a scratch pad "Scotch Brite", scratch
•
the perimeter of the window frame where the
adhesive will be applied.
Clean door frame again using anti-silicone.
•
Apply some Sika 206 G+P onto door frame.
•
• Apply Sika 255 onto door frame structure.
Apply Sika 255 at junction of frame and
•
window.
PA1621 Maintenance Manual All Series | Revised Sept 2019
SECTION 18b: X3 SERIES BODY
REMEDY
Sika Aktivator around window
37