Service Manual Instruction Manual

SECTION 5 - HYDRAULICS
5-2 – JLG Lift – 3121616
Dip
NOTE: This method works best with Face Seal O-rings, but will
work for all O-ring fitting types.
Tools needed:
• Small leak proof container
• Sponge cut to fit inside container
• Small amount of hydraulic oil to saturate sponge.
1. Place sponge inside container and add hydraulic oil to
sponge until fully saturated.
2. Dip fitting into sponge using firm pressure.
3. After lifting fitting, a small droplet should form and drip
from bottom of fitting. This indicates an even coating of
oil.
NOTE: O-ring boss-type fittings require more pressure to immerse
more of fitting into saturated sponge. This also causes
more oil to be dispersed from sponge.
Spray
This method requires a pump or trigger spray bottle.
1. Fill spray bottle with hydraulic oil.
2. Hold fitting over suitable catch can.
3. Spray entire O-ring surface with medium coat of oil.
Brush-On
This method requires a sealed bottle brush.
1. Fill bottle with hydraulic oil.
2. Using slight pressure to body of spray bottle, invert bot-
tle so brush end faces down.
3. Brush an even coat of hydraulic oil on entire O-ring.