3-4 Clutch Clearance
3-4 clutch clearance1. Measure the 3-4 clutch clearance.
(1) Install the 3-4 clutch in the end cover and set the dial gauge.
(2) Secure the 3-4 clutch by lightly pressing down with a press. etc.
(3) Apply compressed air to the part indicated in the figure and let the 3-4 clutch piston stroke three times.
Air pressure 392 - 441 kPa (4.0 - 4.5 kgf/cm2, 57 - 63 psi)
(4) Apply compressed air and operate the 3-4 clutch piston. Read the value when the indicator of the dial gauge stops.
(5) Release the compressed air and read the dial gauge when the 3-4 clutch piston is not operating.
(6) Calculate the 3-4 clutch clearance according to the following formula: Step (4) value - Step (5) value = 3-4 clutch clearance.
(7) Measure the clearances at four locations (90° apart) by following the steps from (3) to (6). Verify that the average value is within the specification below.
3-4 clutch clearance
Drive plate part number: FN11 19 370 1.00 - 1.30 mm (0.039 - 0.051 inch)
Drive plate part number: FNE1 19 370 1.10 - 1.40 mm (0.043 - 0.055 inch)
2. If not as specified, replace parts as necessary.