Wacker Neuson 28Z3 Service Manual

SHB 28Z3 EN – Edition 2.0 * 28z3s810.fm 8-27
PowerTilt PTS06
8.20 Lubrication and tests
☞ For purposes of lubrication or testing, connect the PowerTilt swivel device either to a
hydraulics test bench or to a portable pump.
☞ Fasten the PowerTilt swivel device firmly in order to avoid any movement.
Lubrication
☞ Fit the grease nipples, grease decompression valves and covers.
☞ Before putting the PowerTilt swivel device into operation, apply lithium grease to the
plug seals and pressure discs.
☞ Use a grease gun to lubricate the seals and pressure discs at grease nipples h or the
lubrication connection at the base of the PowerTilt swivel device until grease escapes
from the grease decompression valves j.
☞ Slowly put the PowerTilt swivel device into operation and lubricate again as required.
Let the device carry out 20 – 30 cycles during the test, to test the machine for leaks and
correct rotation.
Test for internal leaks
☞ Connect a 350 bar (5076 psi) pressure gauge to the hydraulic line to P1. Create pres-
sure at P1 until the rotating shaft touches the internal or external limits.
Notice!
Otherwise hydraulic oil escapes at P2 in very little time.
☞ Remove and close the hydraulic line at P2. Create a pressure of 175 bar (2538 psi) at
P1. Check for leaks at P2 and near the main shaft and end-cap seals.
Notice!
Leaks are a sign of incorrectly installed parts.
☞ Connect a hydraulic line to P2 and create pressure as in step 1.
☞ Check for leaks at P1 and near the main shaft and end-cap seals (see step 2).
Fig. 76: Connecting rod and head screws
Fig. 77: Lubricant
Fig. 78: Hydraulic connections PTS06
P1
P2

Wacker Neuson 28Z3 Specifications

General

Brand	Wacker Neuson
Model	28Z3
Category	Excavators
Language	English