Cayman 2006 Chassis Information — Section 10 • 265
Transmission Fluid Level - Cold Check
Cold Check - Manual Check Procedures:
The concept of a cold check is to determine adequate fl uid level for safe operating until hot check can be
performed.
To Check the Fluid When Cold:
• Park the motorhome on a level surface. Set the parking brake.
• With the engine operated at a low idle, put the transmission in N (Neutral).
• Chock the wheels to prevent the motorhome from moving.
• Allow the engine to run at idle (500 to 800 RPM) for one minute.
• Apply the service brakes and shift to D (Drive), then to N (Neutral) and next to R (Reverse) to fi ll the
system. Finally shift to N (Neutral) and release the service brakes. Allow the engine to continue to run at
idle (500 to 800 RPM).
• Remove the dipstick and wipe clean. Reinsert the dipstick fully into the tube and remove to check fl uid
level. Repeat this to verify the reading if needed.
• Safe operating level is anywhere within the COLD CHECK band on the dipstick. The fl uid level is
suffi cient enough to operate until a Hot Check can be performed.
• If the level is not within this band, add or drain the fl uid as necessary to put the level to the middle of the
COLD CHECK band.
• Perform the Hot Check at the fi rst opportunity after reaching normal operating temperatures (160º to 200º
F/71º to 93º C).
CAUTION:
Low or high fluid level can cause overheating and irregular shift patterns. These conditions
can damage the transmission if not corrected.
Transmission Fluid Level - Hot Check
• The fl uid level rises as the temperature increases. The fl uid must be hot to ensure an accurate check.
• Be sure the fl uid has reached normal operating temperature (160º to 200º F/71º to 93º C). If a transmission
temperature gauge is not present, check the fl uid level when the engine water temperature gauge has
stabilized and the transmission has been operated under the load for at least one hour.
• Park the motorhome on a level surface and shift to N (Neutral). Apply the parking brake and allow the
engine to idle (500 to 800 RPM).
• After wiping the dipstick clean, check the fl uid level. Safe operating level is anywhere within the HOT
RUN band on the dipstick.
• The width of the HOT RUN band is approximately one quart of fl uid at normal temperature range.
• If the level is not within this band, add or drain the fl uid as necessary to put the level within the HOT
RUN band.
• Be sure that the fl uid level checks are consistent. Check the level more than once. If the readings are not
consistent check to be sure that the transmission breather is clean and not clogged. If the readings are still
not consistent, contact the nearest Allison distributor or dealer.
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