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VISTA MASTS ® DESCRIPTION AND REPAIRS FOR LIFT TRUCKS WITH 3,500 TO 6,000 KG (7,000 TO 12,000 LB) CAPACITIES H3.50-5.00XL (H70-110XL) [G005]; S3.50-5.50XL (S70-120XL) [D004]; E3.50-5.50XL (E70-120XL) [C098] PART NO. 897122 4000 SRM 340...
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• Use the correct tools for the job. • Keep the tools clean and in good condition. • Always use HYSTER APPROVED parts when making repairs. Replacement parts must meet or exceed the specifications of the original equipment manufacturer. • Make sure all nuts, bolts, snap rings, and other fastening devices are removed before using force to remove parts.
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Table of Contents Vista Masts ® TABLE OF CONTENTS (Continued) Mast Adjustments.............................. Carriage Adjustment ............................Troubleshooting..............................This section is for the following models: H3.50-5.00XL (H70-110XL) [G005]; S3.50-5.50XL (S70-120XL) [D004]; E3.50-5.50XL (E70-120XL) [C098]...
4000 SRM 340 Description and Operation General ® This section has the description, operation, and repair procedures for the Vista masts for the 3,500 to 6,000 kg (7,000 to 12,000 lb) capacity lift trucks. Information on the different types of sideshift carriages is also in- cluded.
Description and Operation 4000 SRM 340 Two lift chains control the movement of the carriage. The chains are fastened to mounts near the top of the lift cylinder shells. The chains go up and over the chain sheaves on the inner weldment and then connect to the carriage.
4000 SRM 340 Safety Procedures When Working Near Mast The three lift cylinders are connected by hoses and cylinders extend the intermediate weldment, the in- tubing. To extend the mast, oil from the main con- ner weldment is extended by the lift chains. trol valve flows to all cylinders at the same time.
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Safety Procedures When Working Near Mast 4000 SRM 340 A. TWO-STAGE LFL MAST B. TWO-STAGE FFL MAST C. THREE-STAGE FFL MAST 1. OUTER WELDMENT 4. HOOK 7. CROSSMEMBER 2. INNER WELDMENT 5. FREE-LIFT CYLINDER 3. INTERMEDIATE WELDMENT 6. CROSSMEMBER Figure 5. Two-Stage LFL, Two-Stage FFL, and Three-Stage FFL Masts...
4000 SRM 340 Forks Replacement Forks Replacement The identification of a fork describes how the fork is [66 to 183 kg (145 to 402 lb) for a hook fork] and connected to the carriage. The series of lift trucks [128 to 226 kg (281 to 498 lb) for a pin fork]. that use this mast normally have hook forks.
Carriage Repair 4000 SRM 340 Pin Fork Remove Put blocks under forks and lower carriage. When weight of forks have been removed from fork pin, re- move load backrest extension. The load backrest ex- tension holds the fork pin in the carriage. Slide fork pin from its mount in the carriage and through the eye of the fork.
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4000 SRM 340 Carriage Repair 1. Lower carriage and forks on blocks so lift chains WARNING become loose. See Figure 9 and Figure 12. Make sure that the carriage has stability and will not fall over when the inner weldment is WARNING raised above the load rollers of the carriage.
Disconnect sideshift cylinder at carriage and at DESIGNS) apron. Remove sideshift cylinder. See Figure 10, The earlier Hyster Company designs of sideshift car- Figure 11, Figure 12, and Figure 13. riages for this mast are shown in Figure 12 and Fig- 2.
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4000 SRM 340 Sideshift Carriage Repair Legend for Figure 12 A. H3.50-4.00XL-5 (H70-80XL) C. BACK OF CARRIAGE B. FACE OF CARRIAGE D. H4.00XL-6, H4.50-5.00XL (H90-100XL) 1. CARRIAGE 8. SIDE ROLLER 2. APRON 9. CHAIN ANCHOR (FREE-LIFT AND 3. SIDESHIFT CYLINDER THREE-STAGE MAST) 4.
Sideshift Carriage Repair 4000 SRM 340 Install bracket and cylinder will stay on the standard carriage. Remove bushings. 1. Use hydraulic system of lift truck or a lifting de- vice to raise inner weldment. Raise inner weld- 4. Disconnect hydraulic lines at sideshift cylinder. ment until it is above the load rollers of the car- Put caps on open lines.
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4000 SRM 340 Sideshift Carriage Repair 1. STANDARD CARRIAGE 5. BOTTOM BUSHING 2. TOP BAR, SIDESHIFT CARRIAGE 6. SIDESHIFT CYLINDER 3. TOP BUSHING 7. BOTTOM BARS, SIDESHIFT CARRIAGE 4. CYLINDER MOUNT BRACKET Figure 14. Sideshift Carriage (1993 and Later Design) 5.
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