Parker MA3 Series Manual

MA3 Hydraulic Cylinders
MAINTENANCE BULLETIN
'Mill Type' roundline cylinders for working pressures
up to 250 bar

2
CADE –
Cylinder and Accumulator Division Europe
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3Parker Hannifin
Cylinder and Accumulator Division Europe
Maintenance Bulletin 'Mill Type' Cylinders
MA3 Series
WARNING – USER RESPONSIBILITY
FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS DESCRIBED HEREIN OR RELATED ITEMS CAN CAUSE
DEATH, PERSONAL INJURY AND PROPERTY DAMAGE.
This document and other information from Parker-Hannifin Corporation, its subsidiaries and authorized distributors provide product or
system options for further investigation by users having technical expertise.
The user, through its own analysis and testing, is solely responsible for making the final selection of the system and components and
assuring that all performance, endurance, maintenance, safety and warning requirements of the application are met. The user must analyze
all aspects of the application, follow applicable industry standards, and follow the information concerning the product in the current product
catalog and in any other materials provided from Parker or its subsidiaries or authorized distributors.
To the extent that Parker or its subsidiaries or authorized distributors provide component or system options based upon data or speci-
fications provided by the user, the user is responsible for determining that such data and specifications are suitable and sufficient for all
applications and reasonably foreseeable uses of the components or systems.
Offer of Sale
Please contact your Parker representation for a detailed 'Offer of Sale'.
CADE –
Cylinder and Accumulator Division Europe Contents
Page
Contents and Part Numbers of Service Kits 3
Service Kits Order Codes - Glands 6
Service Kits Order Codes - Piston 6
Operating Fluids and Temperature Ranges 7
Seals and Fluid Data 7
Removal 8
Installation 9
Servicing Piston Seals 10
Re-Assembly Piston and Seals 11
Cylinder Assembly 12
Storage 12
Repair 12
MA3 Support Assets 13

4Parker Hannifin
Cylinder and Accumulator Division Europe
Maintenance Bulletin 'Mill Type' Cylinders
MA3 Series
Fig. 1
Key to Part Numbers
1 Head
7 Cap
14a Standard and Low Friction gland
14b Chevron gland
15 Cylinder tube
17 Piston
17a Chevron piston – head end
17b Chevron piston – cap end
18 Cushion sleeve
19 Front/rear flange
23 Head/cap securing screw
26 O-ring (cylinder body)
132 Energising ring for Low Friction piston seal 131
133 Wear ring for Low Friction piston
134 O-ring back up washer (gland/head)
136 Gland securing screw
137 Chevron rod seal assembly
138 Back up washer – Chevron rod seal assembly
139a Wear ring for Chevron gland
139b Wear rings for Chevron gland
140a Wear ring for Standard gland
140b Wear rings for Standard gland
141a Wear ring for Low Friction gland
141b Wear rings for Low Friction gland
142 Chevron piston bearing ring
143 Chevron piston seal assembly
35
34
36
37
18
17 17a
17b
23
7
40
41
70a
69a
19
15
19
14b
14a
70a
69a
1
45
134
26
23
74
73 47
26
27
47

5Parker Hannifin
Cylinder and Accumulator Division Europe
Maintenance Bulletin 'Mill Type' Cylinders
MA3 Series
Key to Part Numbers
27 Gland retainer (secured by screws or threaded)
34 Piston rod – single rod, no cushion
35 Piston rod – single rod, cushion at head end
36 Piston rod – single rod, cushion at cap end
37 Piston rod – single rod, cushion at both ends
40 Gland wiperseal
41 Lipseal
45 O-ring (gland/head)
46 O-ring, piston/rod (2 off – Chevron piston)
47 Back-up washer for cylinder body O-ring 26
55 Piston locking pin
Low Friction Piston, Fig. 6
Standard Piston, Fig. 5 Chevron Piston, Fig. 7
Standard Gland & Seals, Fig. 2 Low Friction Gland & Seals, Fig. 3 Chevron Gland & Seals, Fig. 4
40
41
14a
134
124
45
123 140b
140a
55
127
125
12646
127
123141a 141b
40
14a
134
45
13246
55
133131133
134
136
14b
45
27
139a
138 137 139b
40
46
142
17a
55
143
17b
40
41
14a
134
124
45
123 140b140a
55
127
125
12646
127
123141a 141b
40
14a
134
45
13246
55
133
131133
Contents and Part Numbers of Service Kits
Gland Service Cartridge Kit, Standard and Loadholding Seals Contains items 14a, 40, 41, 45, 123, 124, 134, 140a, and two of 140b.
Gland Service Cartridge Kit, Chevron Seals Contains items 14b, 40, 45, 134, 137, 138, 139a, and two of 139b.
Gland Service Cartridge Kit, Low Friction Seals Contains items 14a, 40, 45, 134, 141a, and two each of 123, 124, 141b.
Gland Service Kit, Standard and Loadholding Seals Contains items 40, 41, 45, 123, 124, 134, 140a, and two of 140b.
Gland Service Kit, Chevron Seals Contains items 40, 45, 134, 137, 138, 139a, and two of 139b.
Gland Service Kit, Low Friction Seals Contains items 40, 45, 134, 141a, and two each of 123, 124, 141b.
Piston Service Kit, Standard Seals Contains items 46, 125, 126, and two of 26, 47 and 127.
Piston Service Kit, Chevron and Loadholding Seals Contains items 142, and two each of 26, 46, 47 and 143.
Piston Service Kit, Low Friction Seals Contains items 46, 131, 132, and two of 26, 47 and 133.
69a Cushion needle valve cartridge sealing washer
70a Cushion needle valve cartridge
73 Floating cushion bush
74 Cushion bush retaining ring
123 Stepseal
124 Pre-load ring for stepseal 123
125 Standard piston seal
126 Energising ring for Standard seal 125
127 Wear ring for Standard piston
131 Low Friction piston seal