5)
Start the filter caddy. Check to be sure oil
is flowing through the filters.
Operate filter caddy approximately 10 min-
utes so oil in hydraulic oil tank is circulated
through filter a minimum of four times.
※
Hydraulic oil tank capacity 110ℓ(29.1
U.S. gal).
Leave filter caddy operating for the next
steps.
6)
Start the engine and run it at high idle.
※
For the most effective results, cleaning
procedure must start with the smallest
capacity circuit then proceed to the next
largest capacity circuit.
7)
Operate all functions, one at a time, through
a complete cycle in the following order:
clam, steering, bucket, and boom. Also
include all auxiliary hydraulic functions.
Repeat procedure until the total system
capacity has circulated through filter caddy
seven times, approximately 30 minutes.
Each function must go through a minimum
of three complete cycles for a through
cleaning for oil.
※
Filtering time for machines with auxiliary
hydraulic functions must be increased
because system capacity is larger.
8)
Stop the engine. Remove the filter caddy.
9)
Install a new return filter element.
Check oil level in hydraulic oil tank ; Add oil
10)
if necessary.
5-22