1. CRANKSHAFT AND CAM ASSEMBLY PROCEDURE

A. Set bearing block (part #EM14303) into hydraulic press. Place bearing cup into bearing block and press in evenly. Bearing cup should be aligned equally on both sides of bearing block.

B. Set crankshaft into hydraulic press with the long end towards the top. Install spacer (part #EM14322), O-ring (part #EM14326) and bearing cone (part #EM14325) onto crankshaft. Place bearing block on crankshaft until the bearing cone is riding in the bearing cup. Insert bearing cone spacer (part #EM14323) onto crankshaft and inside bearing block. Install second bearing cone until it is seated inside bearing cup. Place O-ring and spacer (part #EM14302) on crankshaft. Set cam weldment on top of spacer. Install crankshaft key and cam key on cam bushing (part #EM14301). Slide cam bushing down crankshaft and align the bushing, cam and crankshaft. Install sleeve over crankshaft and align with hydraulic press. Install cam bushing bolts loosely. Press bushing down onto bearing assembly. Leaving pressure on the bushing, tighten cam bolts evenly to 40-50 foot pounds. Release pressure on the bushing, re-apply pressure to bushing and tighten bolts evenly to 40-50 foot pounds. Repeat procedure 3 to 4 times. After bushing is tight into cam, remove from hydraulic press. Remove one bolt at a time, using Loctite, install bolts and torque to 65-70 foot pounds. Counter sink set screw hole and install dog point set screw and second set screw both with Loctite.

C. Place cam bearing onto crankshaft keeping bearing loose. *Note: Make sure the eccentric lock is facing toward the outside of the pumping unit.

D. Set crankshaft assembly into the pump box and align both bearing assemblies with the pump box mountings.

E. After crankshaft assembly is securely fastened to the pump box, place sprocket (part #EM14307) onto the cam side of the crankshaft assembly. Install bushing (part #EM14309) into sprocket. Align sprocket with sprocket on countershafts and tighten bolts.

F. Install chain part #EM14308. To adjust, loosen locknuts on pusher bolts and tighten chain to approximately 1/2” slack in the chain. Once chain is adjusted properly, tighten down locknuts.

C-30HD — SERVICE PROCEDURES

2. BALL AND SEAT REPLACEMENT PROCEDURE

A. Remove 3”x 2” reducer and 3” elbow from the pump outlet. Remove exhaust gate and Y-manifold (secondary manifold). Check ball seat and ball stop pin for wear. If any wear is detected, the part should be replaced. Remove T-manifold (primary manifold). Check all parts for wear. Remove hopper and hopper seat and inspect.

B. Loosen the piston nuts and remove the piston cup assembly and cylinders. Inspect all parts for wear and replace parts with excessive wear. Check oiler pump for proper operation.

C. Clean all parts thoroughly, removing all foreign material and concrete slurry. Once parts are clean, install concrete cylinders. Place oiler plate O-ring in place and coat with oil. Install small O-ring on piston rod. Run oiler line through the cylinders and connect in the oiler fitting on the oiler plate. Push oiler plate into cylinder. Install ring and felt holder, soak felt ring in oil, then install around felt holder in cylinder. Make sure the bronze ring is flat, then push it up flush with the ring and felt holder. Coat piston cup with oil and push it inton the cylinder. Install bushing into center of piston cup. Put small O-ring on rod, place face plate on rod and tighten down securely. Repeat these procedure on the opposite cylinder.

D. Thoroughly check T-manifold, ball stoppings and both steel balls for wear. Insert an O-ring in the top flange and in the leading edge of the manifold. Put the manifold onto the primary side of the pump and install bolts leaving them loose.

E. Check Y-manifold for wear, install all O-rings, ball stop pin, ball and seat. Align and install Y-manifold to T-manifold and cylinder assembly. Tighten Y-manifold bolts first before tightening T-manifold bolts. After manifolds are tight, check O- rings for slippage.

F. Insert seat into frame hole directly above the T-manifold. The seat orifice should fit inside the frame itself, then the seat sits on top of the orifice. On the dura-seat, set the big end of the seat in the frame. The seat, or the small part of the dura- seat, fits into the bottom of the hopper.

G. After tightening the manifold bolts and inserting the seats in place, set the hopper over the seat and align the bolt holes. Tighten bolts, check O-ring and seat for alignment.

H. Check exhaust gate for wear, install and align gate onto Y- manifold. Insert O-ring into exhaust gate flange and close gate. Lock down lever and adjust clamp arm.

I. Install 3” elbow and 3”x 2” reducer. Fill hopper half full and check for leaks.

PAGE 76 — C-30HD — PARTS & OPERATION MANUAL — REV. #4 (03/06/01)

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Multiquip C-30HD operation manual 30HD Service Procedures, Ball and Seat Replacement Procedure

C-30HD specifications

The Multiquip C-30HD is a powerful and versatile concrete saw designed for a variety of cutting applications. This robust machine is particularly well-suited for heavy-duty tasks, making it a favorite among contractors and construction professionals. With a focus on performance, ease of use, and durability, the C-30HD stands out in the competitive market of concrete cutting equipment.

One of the standout features of the C-30HD is its engine. Powered by a reliable Honda GX390 gasoline engine, it delivers impressive power and ensures smooth operation during cutting tasks. The engine is designed for fuel efficiency and ease of maintenance, allowing users to minimize downtime and extend the saw's lifespan.

The C-30HD also comes equipped with a heavy-duty, adjustable frame that provides stability and precision during operation. This adjustable frame allows for depth control, enabling operators to cut to various depths depending on the requirements of the job. Its ergonomic design ensures comfortable handling, which is crucial when working on large or extended projects.

In terms of cutting capabilities, the C-30HD features a 30-inch blade capacity, allowing it to tackle substantial concrete slabs with ease. It accommodates various blade types, enabling versatility in cutting different materials like asphalt or brick. The saw is also designed with a water delivery system that helps minimize dust and cooling the blade, improving cutting efficiency and prolonging blade life.

Technologically, the C-30HD integrates advanced safety features to enhance user protection. This includes a blade guard that shields operators from potential hazards during operation. Additionally, the saw's controls are intuitively located for easy access, promoting safe operation and reducing the risk of accidents.

Another noteworthy characteristic of the C-30HD is its transportability. Equipped with sturdy wheels, this concrete saw can be easily moved around job sites, enhancing productivity and flexibility. Coupled with its rugged construction, the C-30HD is built to withstand the demands of tough working environments, ensuring longevity and reliable performance.

In summary, the Multiquip C-30HD concrete saw combines powerful performance, innovative features, and robust design. It meets the needs of professionals in the construction industry seeking high-quality concrete cutting solutions. With its remarkable engine, adjustable frame, and safety technologies, the C-30HD is a top choice for heavy-duty cutting tasks. Whether tackling large projects or intricate cuts, operators can trust the reliability and efficiency of the C-30HD to get the job done.