CNH LOCKING HYDRAULICS KIT Installation Instructions (90397248)

CNH LOCKING HYDRAULICS KIT Installation Instructions (90397248)

Out in the field or on a construction site, your machine’s hydraulics are working around people, traffic, and uneven ground, so you want those cylinders staying put when they’re supposed to. This locking hydraulics kit manual walks you through how to install the valves, hoses, and hardware so the boom or attachment won’t drift or drop when parked or locked out. Say you’re hauling the machine on a trailer: you’ll trace the existing lines, route the new lock valve, and verify it holds position before you hit the road.

Applications & Use Cases

• Trace and identify the correct hydraulic circuits so you don’t cut into the wrong line or lose a function.
• Check mounting points, then align and bolt on the lock components so they’re solid and won’t vibrate loose.
• Route hoses and wiring cleanly, inspect for rub points, and test for leaks before you put the machine back to work.
• Isolate the system, bleed trapped air, and verify the lock actually holds the boom or attachment under load.
• Use the step‑by‑step to safely remove, reinstall, or upgrade the kit when other hydraulic repairs are needed.

FAQ

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

A: It’s typically a PDF, so you can search terms like “bleed” or “test” and jump right to the steps.

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

A: Yeah, you can usually print selected pages, stick them in a sleeve, and keep them at the machine while you work.

Safety Note

Always depressurize and verify the hydraulic system is isolated before you crack any fittings or cut into a line.

CNH LOCKING HYDRAULICS KIT 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

CNH

90397247 – LOCKING HYDRAULICS KIT (3.0 hours*)
CASE CONSTRUCTION
521G Wheel loader, Stage 5, standard
linkage (ZB) NA
521G Wheel loader, Stage 5, standard
linkage (ZB) NA
521G Wheel loader, Stage V, standard
linkage (ZB) – High Performance
521G Wheel loader, Stage V, standard
linkage (ZB) [FNH0521GNZHE13926 – ]
521G Wheel loader, Stage V, standard
linkage (ZB) [FNH0521GNZHE13926 – ]
521G Wheel loader, Stage V, standard
linkage (ZB) [FNH0521GNZHE13926 – ]
521G Wheel loader, Stage V, standard
linkage (ZB) [FNH0521GNZHE13926 – ]
521G Wheel loader Stage 5 STD – New ZF
Transmission Control Unit
521G Wheel loader Stage 5 STD – New ZF
Transmission Control Unit
521G Wheel loader Stage 5 STD – New ZF
Transmission Control Unit
521G Wheel loader Stage 5 STD – New ZF
Transmission Control Unit
521G Wheel loader Stage 5 STD – New ZF
Transmission Control Unit
521G Wheel loader Stage 5 STD – New ZF
Transmission Control Unit
521G Wheel loader Stage V STD – High
Performance
521G Wheel loader Stage V STD – High
Performance
521G Wheel loader Stage V STD – High
Performance
521G Wheel loader Stage V STD – High
Performance
521G Wheel loader, Tier 4B (final), standard
linkage (ZB) [JEE0521GNLF253006 – ]
521G Wheel loader, Tier 4B (final), standard
linkage (ZB) [JEE0521GNLF253006 – ]
521G Wheel loader, Tier 4B (final), standard
linkage (ZB) [JEE0521GNLF253006 – ]
521G Wheel loader, Tier 4B (final), standard
linkage (ZB) [JEE0521GNLF253006 – ]
521G Wheel loader, Tier 4B (final), XR
linkage [JEE0521GNLF253006 – ]
521G Wheel loader, Tier 4B (final), XR
linkage [JEE0521GNLF253006 – ]
521G Wheel loader, Tier 4B (final), XR
linkage [JEE0521GNLF253006 – ]
521G Wheel loader, Tier 4B (final), XR
linkage [JEE0521GNLF253006 – ]
521G Wheel loader TIER 4B STD – New ZF
Transmission Control Unit
521G Wheel loader TIER 4B STD – New ZF
Transmission Control Unit
521G Wheel loader, Tier 4B (final), standard
linkage (ZB) – High Performance
521G Wheel loader, Tier 4B (final), standard
linkage (ZB) – High Performance
521G Tier 4B (final) – ZB linkage – 2025
Updates
521G Tier 4B (final) – ZB linkage – 2025
Updates
521G Wheel loader TIER 4B XR – New ZF
Transmission Control Unit
521G Wheel loader TIER 4B XR – New ZF
Transmission Control Unit
521G Wheel loader, Tier 4B (final), XR
linkage -High Performance
521G Wheel loader, Tier 4B (final), XR
linkage -High Performance
521G Wheel loader, Stage V, standard
linkage (ZB) – High Performance
621G Wheel loader, Tier 4B (final), standard
linkage-ZB (Lecce Prod for NA)
621G Wheel loader, Tier 4B (final), standard
linkage-ZB New ZF transmission control
unit (Lecce Prod for NA)
621G Wheel loader, Tier 4B (final), standard
linkage – High Performance (Lecce Prod
for NA)
621G Tier 4B (final) – STD linkage – 2025
Updates
621G Tier 4B (final) – STD linkage – 2025
Updates
621G Tier 4B (final) – STD linkage – 2025
Updates
621G Tier 4B (final) – STD linkage – 2025
Updates
621G Tier 4B (final) – STD linkage – 2025
Updates
621G Tier 4B (final) – STD linkage – 2025
Updates
621G Wheel loader, Stage V, standard
linkage (ZB) [FNH0621GNZHE13949 – ]
621G Wheel loader, Stage V, standard
linkage (ZB) [FNH0621GNZHE13949 – ]
621G Wheel loader, Stage V, standard
linkage (ZB) [FNH0621GNZHE13949 – ]
621G Wheel loader, Stage V, standard
linkage (ZB) [FNH0621GNZHE13949 – ]
621G Wheel loader Stage 5 STD – New ZF
Transmission Control Unit
621G Wheel loader Stage 5 STD – New ZF
Transmission Control Unit
621G Wheel loader Stage 5 STD – New ZF
Transmission Control Unit
621G Wheel loader Stage 5 STD – New ZF
Transmission Control Unit
621G Wheel loader Stage 5 STD – New ZF
Transmission Control Unit
621G Wheel loader Stage 5 STD – New ZF
Transmission Control Unit
621G Wheel loader Stage V STD – High
Performance
621G Wheel loader Stage V STD – High
Performance
621G Wheel loader Stage V STD – High
Performance
621G Wheel loader Stage V STD – High
Performance
621G Wheel loader, Tier 4B (final), standard
linkage (ZB) [JEE0621GNLF253010 – ]
621G Wheel loader, Tier 4B (final), standard
linkage (ZB) [JEE0621GNLF253010 – ]
621G Wheel loader, Tier 4B (final), standard
linkage (ZB) [JEE0621GNLF253010 – ]
621G Wheel loader, Tier 4B (final), standard
linkage (ZB) [JEE0621GNLF253010 – ]
621G Wheel loader, Tier 4B (final), XR
linkage [JEE0621GNLF253010 – ]
621G Wheel loader, Tier 4B (final), XR
linkage [JEE0621GNLF253010 – ]
621G Wheel loader, Tier 4B (final), XR
linkage [JEE0621GNLF253010 – ]
621G Wheel loader, Tier 4B (final), XR
linkage [JEE0621GNLF253010 – ]
621G Wheel loader TIER 4B STD – New ZF
Transmission Control Unit
621G Wheel loader TIER 4B STD – New ZF
Transmission Control Unit
621G Wheel loader, Tier 4B (final), standard
linkage – High Performance
621G Wheel loader, Tier 4B (final), standard
linkage – High Performance
621G Tier 4B (final) – ZB linkage – 2025
Updates
621G Tier 4B (final) – ZB linkage – 2025
Updates
621G Tier 4B (final) – ZB linkage – 2025
Updates
621G Tier 4B (final) – ZB linkage – 2025
Updates
621G Tier 4B (final) – ZB linkage – 2025
Updates
621G Tier 4B (final) – ZB linkage – 2025
Updates
621G Wheel loader TIER 4B XR – New ZF
Transmission Control Unit
621G Wheel loader TIER 4B XR – New ZF
Transmission Control Unit
621G Wheel loader, Tier 4B (final), XR
linkage – High Performance
621G Wheel loader, Tier 4B (final), XR
linkage – High Performance
621G Tier 4B (final) – XR linkage – 2025
Updates
621G Tier 4B (final) – XR linkage – 2025
Updates
621G Tier 4B (final) – XR linkage – 2025
Updates
621G Tier 4B (final) – XR linkage – 2025
Updates
621G Tier 4B (final) – XR linkage – 2025
Updates
621G Tier 4B (final) – XR linkage – 2025
Updates
621G Wheel loader, Stage V, standard
linkage (ZB) – High Performance
651G Wheel loader StageV STD – High
Performance (4.0 hours*)
651G Wheel loader StageV STD – High
Performance (4.0 hours*)
651G Wheel loader StageV STD – High
Performance (4.0 hours*)
651G Wheel loader StageV STD – High
Performance (4.0 hours*)
651G Wheel loader, Tier 4B (final), standard
linkage – High Performance (4.0 hours*)
651G Wheel loader, Tier 4B (final), standard
linkage – High Performance (4.0 hours*)
651G Tier 4B (final) – ZB linkage – 2025
Updates
651G Tier 4B (final) – ZB linkage – 2025
Updates
651G Wheel loader, Tier 4B (final), XR
linkage – High Performance (4.0 hours*)
651G Wheel loader, Tier 4B (final), XR
linkage – High Performance (4.0 hours*)
651G Tier 4B (final) – XR linkage – 2025
Updates
651G Tier 4B (final) – XR linkage – 2025
Updates
651G Wheel loader, Stage V, standard
linkage – High Performance (4.0 hours*)
521G+ Stage V – STD – Cab Upgrade
521G+ Stage V – STD – Cab Upgrade
521G+ Stage V – STD – Cab Upgrade
521G+ Stage V – STD – Cab Upgrade
621G+ Stage V STD – Cab Upgrade
621G+ Stage V STD – Cab Upgrade
621G+ Stage V STD – Cab Upgrade
621G+ Stage V STD – Cab Upgrade
651G+ Stage V STD – Cab Upgrade
651G+ Stage V STD – Cab Upgrade
651G+ Stage V STD – Cab Upgrade
651G+ Stage V STD – Cab Upgrade
NEW HOLLAND CONSTRUCTION
W110D Wheel loader, Stage V, standard
linkage (ZB) [FNHW110DNZHE14334 – ]
W110D Wheel loader, Stage V, standard
linkage (ZB) [FNHW110DNZHE14334 – ]
W110D Wheel loader, Stage V, standard
linkage (ZB) [FNHW110DNZHE14334 – ]

W110D Wheel loader, Stage V, standard
linkage (ZB) [FNHW110DNZHE14334 – ]
W110D Wheel loader, Stage V, standard
linkage (ZB) [FNHW110DNZHE14334 – ]
W110D Wheel loader, Stage V, standard
linkage (ZB) [FNHW110DNZHE14334 – ]
W110D Wheel loader Stage 5 STD – New ZF
Transmission Control
W110D Wheel loader Stage 5 STD – New ZF
Transmission Control
W110D Wheel loader Stage 5 STD – New ZF
Transmission Control
W110D Wheel loader Stage 5 STD – New ZF
Transmission Control
W110D Wheel loader Stage 5 STD – New ZF
Transmission Control
W110D Wheel loader Stage 5 STD – New ZF
Transmission Control
W110D Wheel loader Stage V, Z Linkage –
High Performance
W110D Wheel loader Stage V, Z Linkage –
High Performance
W110D Wheel loader Stage V, Z Linkage –
High Performance
W110D Wheel loader Stage V, Z Linkage –
High Performance
W110D Wheel loader, Stage V, standard
linkage (ZB) – High Performance
W130D Wheel loader, Stage V, standard
linkage (ZB) [FNHW130DNZHE14367 – ]
W130D Wheel loader, Stage V, standard
linkage (ZB) [FNHW130DNZHE14367 – ]
W130D Wheel loader, Stage V, standard
linkage (ZB) [FNHW130DNZHE14367 – ]
W130D Wheel loader, Stage V, standard
linkage (ZB) [FNHW130DNZHE14367 – ]
W130D Wheel loader, Stage V, standard
linkage (ZB) [FNHW130DNZHE14367 – ]
W130D Wheel loader, Stage V, standard
linkage (ZB) [FNHW130DNZHE14367 – ]
W130D Wheel loader Stage 5 STD – New ZF
Transmission Control
W130D Wheel loader Stage 5 STD – New ZF
Transmission Control
W130D Wheel loader Stage 5 STD – New ZF
Transmission Control
W130D Wheel loader Stage 5 STD – New ZF
Transmission Control
W130D Wheel loader Stage 5 STD – New ZF
Transmission Control
W130D Wheel loader Stage 5 STD – New ZF
Transmission Control
W130D Wheel loader Stage V, Z Linkage
– High Performance
W130D Wheel loader Stage V, Z Linkage
– High Performance
W130D Wheel loader Stage V, Z Linkage
– High Performance
W130D Wheel loader Stage V, Z Linkage
– High Performance
W130D Wheel loader, Stage V, standard
linkage (ZB) – High Performance
W150D Wheel loader Stage V, Z Linkage –
High Performance (4.0 hours*)
W150D Wheel loader Stage V, Z Linkage –
High Performance (4.0 hours*)
W150D Wheel loader Stage V, Z Linkage –
High Performance (4.0 hours*)
W150D Wheel loader StageV – Z linkage –
High Performance (4.0 hours*)
W110D+ Stage V – ZB link – Cab Upgrade
W110D+ Stage V – ZB link – Cab Upgrade
W130D+ Stage V – ZB link – Cab Upgrade
W130D+ Stage V – ZB link – Cab Upgrade
W150D+ Stage V – ZB link – Cab Upgrade
W150D+ Stage V – ZB link – Cab Upgrade
* – APPROXIMATE INSTALLATION TIME