PUMP GP-PISTON 2853597 - Caterpillar

(9LR),
D400E (2YR) Articulated TrucksReference: Operation & Maintenance Manual, D350E & D400E Articulated Trucks, SEBU6904-01, Page 68, "Setting The Suspension System".There have been operator complaints of hard ride when operating the D350E and D400E Articulated Trucks. In some cases, service technicians are using the ride height setting procedure for the D350D and D400D Articulated Trucks. That procedure should not be used for the D350E and D400E Articulated Trucks. Using the "D" Series Articulated Truck ride height setting procedure on D350E and D400E Articulated Trucks will cause a hard ride and operator complaints.
Setting the ride height on the D350D and D400D Articulated Trucks used a measurement of the amount of exposed chrome on the suspension cylinders. The method for setting the ride height on the D350E and D400E Articulated Trucks uses the measured amount of exposed chrome on the suspension cylinder and a specific hydraulic pressure measurement.
Every 250 hours or monthly, purge the front and rear suspension and set the ride height using only the method given in the Reference for the D350E and D400E Articulated Trucks.