JLG 1850SJ Service Manual - Manual (Page 122)

SECTION 4 - BOOM & PLATFORM
4-36 – JLG Lift – 3121619
4.8 HOSE ADJUSTMENT PROCEDURE
1. Load the hoses and cables into the powertracks and
push tubes according to Figure 4-52., Powertrack Hose
Installation - Sheet 4 of 4.
2. Adjust the hose and cable lengths at the fly nose clamp
(Location A) per their respective drawings and install
clamp. Tighten the clamp at the end of the top push
tube (Location B). Each clamp is considered tight when
the contained hoses and cables cannot be moved.
3. With clamp B set, pull the hoses and cables until they are
resting against the flat bars on the outside radius of the
power track. Force additional hydraulic hose slack into
the power track by pushing the hoses from the Location
C. Tighten the clamp at location C.
4. While maintaining the hose and cable configuration
listed in Figure 4-52., Powertrack Hose Installation -
Sheet 4 of 4, insert a tool to ensure the minimum bend
radius of 4 inches is not being violated as the hoses are
routed into the push tube at location C. Once adjusted,
tighten the clamp at Location D and remove the tool.
5. With clamp D set, pull the hoses and cables until they
are resting against the flat bars on the outside radius of
the power track. Force additional hydraulic hose slack
into the power track by pushing the hoses from the
Location E. Tighten the clamp at location E.
6. While maintaining the hose and cable configuration
shown in Figure 4-52., Powertrack Hose Installation -
Sheet 4 of 4, insert a tool to ensure the minimum bend
radius of 4 inches is not being violated as the hoses are
routed into the trays at location E. Once adjusted,
tighten the clamp at Location F and remove the tool.
Check additional lengths of the hoses and cables
against the pull lengths listed on their respective draw-
ings.
7. Attach all hydraulic hoses and pressurize the hoses by
dead heading a function. Check hose clearance in both
power tracks. There should be clearance between the
hoses and the inside rollers or flat bars. Release the func-
tion.
8. If the hoses were in contact, loosen the clamps and pull
additional length from the lower clamp (additional
length at location B should be pulled through clamp C,
additional length at location D should be pulled
through clamp E). Steps 3 thru 7 should be followed
when adjusting the hoses.
9. Repeat steps 7 and 8 until there is no contact between
the hoses and the inside radius of the power track.