CNH LOCKING HYDRAULICS KIT XT Installation Instructions (90397250)

Out in the yard or on a muddy jobsite, this machine’s running buckets, forks, maybe an attachment or two, with people and trucks moving close by. This locking hydraulics kit manual walks you through how to install the hardware so the hydraulics stay put when they’re supposed to, instead of drifting or dropping. Say you’re parking on a slope with a raised attachment—these instructions help you route lines, mount valves, and test the lock so you’re not wondering if that boom’s going to creep down overnight.

Applications & Use Cases

• Trace existing hydraulic lines and identify where to tie in the locking kit without guessing or cracking fittings at random.
• Check mounting points, then verify bracket positions so the hardware lines up and doesn’t fight hoses or sheet metal.
• Route hoses and wiring in a way that avoids pinch points, then inspect clearances before you button up panels.
• Isolate the circuit, bleed pressure safely, and test the lock function so you know the attachment will hold when controls are neutral.
• Diagnose a mis-install later by retracing the steps in the manual to see what was skipped or misaligned.

FAQ

Q: Is this a PDF I can search on my laptop or phone?

A: It’s typically a standard PDF, so you can search terms like “bleed” or “test” instead of flipping around.

Q: Can I print just the pages I need for the shop?

A: Yeah, you can usually print sections, toss them in a plastic sleeve, and keep them by the machine while you work.

Safety Note

Always relieve hydraulic pressure and lock out the machine before you crack any line or start loosening fittings.

CNH LOCKING HYDRAULICS KIT XT Index:

1 SAFETY INFORMATION
Basic instructions – Important notice regarding equipment servicing. . . . . . . . . . . . . . . . . . . . . . . 1-1
Advice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Safety rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 KIT CONTENT
Kit overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
3 GENERAL INFORMATION
Basic instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
4 PRE-ASSEMBLY
PREPARING FOR ASSEMBLY
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
5 ASSEMBLY
Install
Locking Hydraulics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
EN
EN

CNH

90397249 – LOCKING HYDRAULICS KIT (XT)
CASE CONSTRUCTION
521G Wheel loader, Stage 5, XT linkage NA
521G Wheel loader, Stage 5, XT linkage NA
521G Wheel loader, Stage V, XT linkage –
High Performance
521G Stage V – XT linkage – 2025 Updates
521G Wheel loader, Stage V, XT linkage
[FNH0521GNZHE14354 – ]
521G Wheel loader, Stage V, XT linkage
[FNH0521GNZHE14354 – ]
521G Wheel loader, Stage V, XT linkage
[FNH0521GNZHE14354 – ]
521G Wheel loader, Stage V, XT linkage
[FNH0521GNZHE14354 – ]
521G Wheel loader Stage 5 XT – New ZF
Transmission Control Unit
521G Wheel loader Stage 5 XT – New ZF
Transmission Control Unit
521G Wheel loader Stage 5 XT – New ZF
Transmission Control Unit
521G Wheel loader Stage 5 XT – New ZF
Transmission Control Unit
521G Wheel loader Stage 5 XT – New ZF
Transmission Control Unit
521G Wheel loader Stage 5 XT – New ZF
Transmission Control Unit
521G Wheel loader Stage V XT – High
Performance
521G Wheel loader Stage V XT – High
Performance
521G Wheel loader Stage V XT – High
Performance
521G Wheel loader Stage V XT – High
Performance
521G Wheel loader, Tier 4B (final), XT
linkage [JEE0521GNLF253006 – ]
521G Wheel loader, Tier 4B (final), XT
linkage [JEE0521GNLF253006 – ]
521G Wheel loader, Tier 4B (final), XT
linkage [JEE0521GNLF253006 – ]
521G Wheel loader, Tier 4B (final), XT
linkage [JEE0521GNLF253006 – ]
521G Wheel loader TIER 4B XT – New ZF
Transmission Control Unit
521G Wheel loader TIER 4B XT – New ZF
Transmission Control Unit
521G Wheel loader, Tier 4B (final), XT
linkage – High Performance
521G Wheel loader, Tier 4B (final), XT
linkage – High Performance
521G Tier 4B (final) – XT linkage – 2025
Updates
521G Tier 4B (final) – XT linkage – 2025
Updates
521G+ Stage V – XT – Cab Upgrade
521G+ Stage V – XT – Cab Upgrade
521G+ Stage V – XT – Cab Upgrade
521G+ Stage V – XT – Cab Upgrade
NEW HOLLAND CONSTRUCTION
W110D Wheel loader, Stage V, XT linkage
W110D Wheel loader, Stage V, XT linkage
W110D Wheel loader, Stage V, XT linkage
W110D Wheel loader, Stage V, XT linkage
W110D Wheel loader, Stage V, XT linkage
W110D Wheel loader, Stage V, XT linkage
W110D Wheel loader Stage 5 TC – New ZF
Transmission Control
W110D Wheel loader Stage 5 TC – New ZF
Transmission Control
W110D Wheel loader Stage 5 TC – New ZF
Transmission Control
W110D Wheel loader Stage 5 TC – New ZF
Transmission Control
W110D Wheel loader Stage 5 TC – New ZF
Transmission Control
W110D Wheel loader Stage 5 TC – New ZF
Transmission Control
W110D Wheel loader Stage V, TC Linkage-
High Performance
W110D Wheel loader Stage V, TC Linkage-
High Performance
W110D Wheel loader Stage V, TC Linkage-
High Performance
W110D+ Stage V – TC link – Cab Upgrade
W110D+ Stage V – TC link – Cab Upgrade