Instructions should be in your owners manual under Slide Operation.
From the 2005 Owners Manual (don't have a copy of the 04):
Monterey 2005 Equipment --- Section 5 • 199
Emergency Procedures - Manual Slide-out Override
If the slide-out room fails to operate, a safety feature may be engaged to prevent room operation.
Check these items if the slide-out room does not respond from the switch:
• Is the ignition key OFF?
• Is the park brake applied?
Pump motor operates, but the slide-out room does not move:
• Check the two fuses adjacent to the hydraulic pump. If the fuses test good and the room does
not operate, it is possible to manually retract a single galley slide. Dual galley slide-outs use
different hydraulic components. Several people (as many as eight) are needed to push
in the room. It may be necessary to contact a repair facility to have the problem diagnosed.
Manual Slide-out Room Operation:
1. Retract the motorhome’s hydraulic leveling jacks (see Leveling Jacks).
2. Locate the slide-out room hydraulic pump on the lower curbside front frame of the chassis.
3. Use a ¼" Nut Driver or the bottom of the reservoir cap to turn the release nuts on the
solenoids counterclockwise. Do not exceed four and a half revolutions. Damage to the
solenoids may result. The room may move slightly when valves are opened and internal
pressure is released.
4. Line up equal distance along the outside wall. Do not push on the flange.
5. In synchronized movements, push the room in with repeated attempts.
6. Close the release nuts when the room is fully retracted.
NOTE:
The slide-out room is heavy and will require several people to push it in
Steve