Graco 308441ZAD Service, Repairing the Air Valve, Tools Required, Disassembly

Page 14

Service

Repairing the Air Valve

Tools Required

DTorque wrench

DTorx (T20) screwdriver or 7 mm (9/32 in.) socket wrench

DNeedle-nose pliers

DO-ring pick

DLithium base grease

NOTE: Air Valve Repair Kits 236273 (aluminum center housing models) and 255061 (sst center housing models) are available. Refer to page 23. Parts included in the kit are marked with a symbol, for example (4{H). Use all the parts in the kit for the best results.

Disassembly

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 10.

1.

Relieve the pressure.

2.

With a Torx (T20) screwdriver or 7 mm (9/32 in.)

 

socket wrench, remove the six screws (3), air

 

valve cover (2), and gasket (4). See Fig. 6.

3.

Move the valve carriage (5) to the center position

3 2 2

4{H

1

Muffler not included on

1 Model No. 253485

Torque to 50–60 in-lb

2(5.6–6.8 NSm).

03268B

Fig. 6

1

See Detail at right.

5

and pull it out of the cavity. Remove the valve

block (7{H) and o-ring (6{H) from the carriage.

Using a needle-nose pliers, pull the pilot block (18)

straight up and out of the cavity. See Fig. 7.

4. Pull the two actuator pistons (11) out of the bear-

ings (12). Remove the u-cup packings (10) from

the pistons. Pull the pilot pins (16) out of the

bearings (15). Remove the o-rings (17) from the

pilot pins. See Fig. 8.

5. Inspect the valve plate (8H) in place. If damaged,

use a Torx (T20) screwdriver or 7 mm (9/32 in.)

socket wrench to remove the three screws (3).

Remove the valve plate (8H) and, on aluminum

center housing models only, remove the seal (9).

See Fig. 9.

6. Inspect the bearings (12, 15) in place. See Fig. 8.

The bearings are tapered and, if damaged, must

be removed from the outside. This requires disas-

sembly of the fluid section. See page 20.

7. Clean all parts and inspect for wear or damage.

Replace as needed. Reassemble as explained on

2Grease.

3 Grease lower face.

2 {H6

3 {H7

18{H 3

5 1

11

page 15.

14 308441

Fig. 7

03269

Page 13 Page 15
Image 14
Page 13 Page 15
Contents Instructions Parts List Huskyt 1590 Air-Operated Diaphragm PumpsTable of Contents ModelsSymbols MPa, 8 bar maximum incoming air pressureToxic Fluid Hazard Tightening Screws Before First Use InstallationGeneral Information GroundingAir Line Installation of Remote Pilot Air LinesMountings Fluid Suction LineTypical FLOOR-MOUNT Installation Fluid Outlet LineChanging the Orientation of the Fluid Inlet and Outlet Ports Fluid Pressure Relief ValveVenting Exhaust AIR Air Exhaust VentilationFire and Explosion Hazard Operation Tightening Threaded Connections MaintenanceLubrication Flushing and StorageTroubleshooting Problem Cause SolutionTroubleshooting Disassembly ServiceRepairing the Air Valve Tools RequiredReassembly 10H 2 17H 15 16Ball Check Valve Repair Diaphragm Repair Service 19 402 105 107 403 104 401 Bearing and Air Gasket Removal Detail of Air Valve Bearings Pump Matrix Husky 1590 Aluminum and Stainless Steel Pumps, Series aRepair Kit Matrix For Husky 1590 Aluminum and Stainless Steel Pumps, Series aParts Drawing Air Motor Parts List Matrix Column PartsFluid Section Parts List Matrix Column Muffler not used on Model NoDiaphragm Parts List Matrix Column Seat Parts List Matrix ColumnBall Parts List Matrix Column Torque Sequence Side View DimensionsFront View Pump Mounting Hole Pattern Technical Data 14 -0.8 MPa, 1.4-8 barPsi MPa, bar Performance ChartFeet meters Fluid Flow GPM lpmGraco Warranties Graco Information

308441ZAD specifications

The Graco 308441ZAD is a versatile and innovative child car seat designed to deliver top-notch safety and comfort for your little ones during travel. This car seat is engineered with advanced features and technologies that make it a popular choice among parents looking for reliability and convenience in child transportation.

One of the standout features of the Graco 308441ZAD is its 3-in-1 design, which provides adaptability as your child grows. It can be used as an infant car seat, a convertible car seat for toddlers, and finally as a booster seat. This remarkable versatility allows parents to use the same car seat from infancy through early childhood, making it a cost-effective solution for families.

Safety is paramount in the design of the Graco 308441ZAD. It comes equipped with an adjustable headrest and side impact protection, ensuring that children are well-protected in the event of a collision. The car seat meets or exceeds all U.S. safety standards and is rigorously tested for safety and durability, giving parents peace of mind during every ride.

The car seat features a Simply Safe Adjust Harness System, which allows parents to adjust the harness and headrest together in one easy step. This feature not only makes it user-friendly but also ensures that children are securely strapped in as they grow. The Graco 308441ZAD also boasts an integrated cup holder, providing easy access to drinks and snacks, and keeping your car organized and tidy.

Another impressive characteristic of the Graco 308441ZAD is its installation system, which utilizes the LATCH (Lower Anchors and Tethers for Children) system, enabling quick and secure installation in most vehicles. Additionally, the car seat is designed with machine-washable covers, ensuring that spills and messes can be easily cleaned up, maintaining the seat’s appearance and hygiene.

In terms of comfort, the Graco 308441ZAD features plush, padded seats and multiple recline positions, allowing children to find a comfortable resting position for longer journeys. With several color options available, this car seat can seamlessly fit into any vehicle interior while providing peace of mind initially intended for your child's safety and well-being.

In summary, the Graco 308441ZAD is a reliable and user-friendly car seat that combines safety, comfort, and versatility, making it an excellent choice for parents who prioritize their child’s safety while traveling.
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