Service

4.Loosen but do not remove the diaphragm shaft bolts (107), using a 15 mm socket wrench (1 in. on stainless steel models) on both bolts. NOTE: This step does not apply to pumps with overmolded diaphragms.

5.Unscrew one bolt from the diaphragm shaft (24) and remove the o-ring (108), fluid side diaphragm plate (105), PTFE diaphragm (403, used on PTFE models only), diaphragm (401), and air side dia- phragm plate (104). See Fig. 12.

For overmolded diaphragms: Grip both dia- phragms securely around the outer edge and rotate counterclockwise. One diaphragm assembly will come free and the other will remain attached to the shaft. Remove the freed diaphragm and air side plate.

6.Pull the other diaphragm assembly and the dia- phragm shaft (24) out of the center housing (1). Hold the shaft flats with a 19 mm open–end wrench, and remove the bolt (107) from the shaft. Disassemble the remaining diaphragm assembly.

For overmolded diaphragms: Pull the other dia- phragm assembly and the diaphragm shaft (24) out of the center housing (1). Hold the shaft flats with a 19 mm open–end wrench and remove the diaphragm and air side plate from the shaft.

7.Inspect the diaphragm shaft (24) for wear or scratches. If it is damaged, inspect the bearings (19) in place. If the bearings are damaged, refer to page 20.

8.Reach into the center housing (1) with an o-ring pick and hook the u-cup packings (402), then pull them out of the housing. This can be done with the bearings (19) in place.

9.Clean all parts and inspect for wear or damage. Replace parts as needed.

Reassembly

1.Install the shaft u-cup packings (402*) so the lips face out of the housing (1). Lubricate the pack- ings. See Fig. 12.

2.Install the diaphragm assembly on one end of the shaft (24) as follows. For pumps with overmolded diaphragms, go directly to step g.

a.Install the o-ring (108*) on the shaft bolt (107).

b.Install the fluid side diaphragm plate (105) on the bolt so the rounded side faces in, toward the diaphragm (401).

c.On PTFE models only, install the PTFE dia- phragm (403*). Make certain the side marked AIR SIDE faces the center housing (1).

d.Install the diaphragm (401*) on the bolt. Make certain the side marked AIR SIDE faces the center housing (1).

e.Install the air side diaphragm plate (104) so the recessed side faces the diaphragm (401).

f.Apply medium-strength (blue) LoctiteR or equivalent to the bolt (107) threads. Screw the bolt (107) into the shaft (24) hand tight.

g.For overmolded diaphragms: Assemble the air side plate (104) onto the diaphragm (403). The wide, radiused side of the plate must face the diaphragm. Apply medium–strength (blue) Loctite or equivalent to the threads of the diaphragm assembly. Screw the assembly into the shaft (24) hand tight.

3.Grease the length and ends of the diaphragm shaft (24), and slide it through the housing (1).

4.Assemble the other diaphragm assembly to the shaft as explained in step 2.

5.Hold one shaft bolt (107) with a wrench and torque the other bolt to 20–25 ft-lb (27–34 NSm) at 100 rpm maximum. NOTE: This step does not apply to pumps with overmolded diaphragms.

6.Align the fluid covers (101) and the center housing

(1) so the arrows (A) on the covers face the same direction as the air valve (B). Apply medium- strength (blue) LoctiteR or equivalent to the threads of screws (106) and (112), and secure the covers with the screws handtight. Install the longer screws (112) in the bottom holes of the covers. See Fig. 11. Using a 13 mm socket wrench, torque the screws oppositely and evenly to 190–220 in-lb (22–25 NSm). See Torque Se- quence, page 28.

7.Reassemble the ball check valves and manifolds as explained on page 16.

18 308441

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Graco 308441ZAD important safety instructions Service
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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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