Looking for a few ideas, working on a 953C 2ZN01943. Warning lights came in and Cat was called out to
Inspect. They said the charge pump was bad. The customer had Cat replace the charge pump. Nothing was repaired. Machine runs fine for about 10 minutes and it starts acting up. Hooked a gauge up to charge pressure tap. Starts out around 400PSI but as it is operated drops off to under 300PSI. Removed the rear belly pan. Hooked gauges up to each case drain port. 5lbs on the left side and 9LBS on the Right side. Then hooked gauges up to each drive pump through the floor. 9LBS on the Right and 0PSI on the left. Checked the drive pressure at the block below your left foot thru the floor. 6200PSI on forward on the left rear corner port and 5800PSI on the right rear corner port in reverse. On the left front corner port the pressure was 6200PSI in Forward and on the rt front corner port it was 6200PSI in reverse. Cut both filters apart with no signs of metal. Please help
Inspect. They said the charge pump was bad. The customer had Cat replace the charge pump. Nothing was repaired. Machine runs fine for about 10 minutes and it starts acting up. Hooked a gauge up to charge pressure tap. Starts out around 400PSI but as it is operated drops off to under 300PSI. Removed the rear belly pan. Hooked gauges up to each case drain port. 5lbs on the left side and 9LBS on the Right side. Then hooked gauges up to each drive pump through the floor. 9LBS on the Right and 0PSI on the left. Checked the drive pressure at the block below your left foot thru the floor. 6200PSI on forward on the left rear corner port and 5800PSI on the right rear corner port in reverse. On the left front corner port the pressure was 6200PSI in Forward and on the rt front corner port it was 6200PSI in reverse. Cut both filters apart with no signs of metal. Please help