Maximize Downtime-Free Performance with the MERIT® Rammer 110316 Cylinder
Engineered for extreme durability and peak performance, the MERIT® Rammer 110316 Cylinder is precision-forged from 4340 alloy steel—a high-strength, heat-treatable material renowned for its toughness and fatigue resistance in the most demanding hydraulic breaker applications. Finished in sleek steel black with a smooth, wear-resistant surface, it’s built to deliver consistent impact and extended service life.
Key Specifications:
- Length: 30 inches
- Diameter: 11 inches
- Weight: 503 lbs
Why Choose MERIT®?
✅ Backed by 20+ years of industry expertise
✅ 1-year warranty against defects in material and workmanship
✅ Part of a comprehensive portfolio of 50,000+ high-performance replacement parts
✅ Engineered for direct-fit compatibility and reliable operation
Upgrade your operation with MERIT®—where strength, precision, and performance meet.
MERIT® is a registered brand offering premium replacement components. All other brand names and logos referenced are for compatibility purposes only.
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Rammer G 90 Tunnel Parts List
1. Housing Unit G 90 TUNNEL (Page 5)
| Item | Part No. | Description | Qty |
| 1 | 110158 | Housing (incl. parts 105-120) |
1 1
|
| 2 | 104137 | Buffer |
1 2
|
| 3 | 104068 | Pad |
2 3
|
| 4 | 102328 | Seal |
1 4
|
| 6 | 101723 | Rubber plug (D60) |
2 5
|
| 7 | 400676 | Rubber plug (D50) |
2 6
|
| 8 | 400566 | Rubber plug (D25) |
6 7
|
| 11 | 90520 | Hex. screw (M36x140-8.8 DIN 931) |
14 8
|
| 12 | 90521 | Washer (37 DIN 6916) |
14 9
|
| 13 | 90519 | Lock nut (M36-8 DIN 985) |
14 10
|
| 14 | 103850 | Shield plate (incl. part 14.1) |
2 11
|
| 14.1 | 103875 | Plug |
2 12
|
| 15 | 90513 | Hex. screw (M12x30-8.8 DIN 933) |
4 13
|
| 16 | 91050 | Hex. screw (M12x40-8.8 DIN 933) |
4 14
|
| 17 | 91012 | Lock washer (M12 NORD-LOCK) |
8 15
|
| 18 | 102939 | Middle bushing |
4 16
|
| 19 | 102944 | Middle bushing |
4 17
|
| 20 | 104085 | Plate |
4 18
|
| 21 | 104100 | Plug |
2 19
|
| 22 | 106081 | Cover (incl. parts 22.2-22.4) |
2 20
|
| 22.2 | 106083 | Bar |
1 21
|
| 22.3 | 106082 | Buffer |
1 22
|
| 22.4 | 90327 | Split pin |
1 23
|
| 23 | 110201 | Tool retaining pin |
2 24
|
| 24 | 103047 | Guide |
2 25
|
| 25 | 102783 | Nozzle (SSCO B1/8GG–SS5) |
2 26
|
| 26 | 103914 | Hose assembly |
1 27
|
| 27 | 90403 | Flange plug (R1/4) |
1 28
|
| 28 | 90424 | Flange plug (R1/2) |
1 29
|
| 105 | 103945 | Wear plate |
1 30
|
| 106 | 103946 | Wear plate |
2 31
|
| 107 | 103947 | Wear plate |
1 32
|
| 108 | 110175 | Wear plate |
1 33
|
| 109 | 90705 | Lifting eye (M30 DIN 580) |
1 34
|
| 110 | 900026 | Hex. screw (M30x40-8.8 DIN 933) |
1 35
|
| 119 | 102389 | Pin |
7 36
|
| 120 | 102387 | Pin |
1 37
|
| Kit | 110437 | Label set |
1 38
|
2. Accumulator G 90 (Page 6)
| Item | Part No. | Description | Qty |
| 1 | 110561 | Accumulator (incl. parts 101-110) |
1 39
|
| 30 | 300711 | Accumulator screw |
8 40
|
| 101 | 110560 | Accumulator bottom |
1 41
|
| 102 | 100491 | Accumulator cover |
1 42
|
| 103 | 104022 | Membrane |
1 43
|
| 104 | 40528 | Accumulator screw |
1 44444444
|
| 105 | 40368 | Filling plug |
1 45454545
|
| 106 | 40536 | Seal (D144) |
1 46464646
|
| 107 | 154015 | Shield plug |
1 47474747
|
| 108 | 90056 | Usit-ring (D9) |
1 48
|
| 109 | 90304 | Parallel pin (10m6x24 DIN 6325) |
2 49
|
| 110 | 910006 | O-ring (D23) |
1 50
|
3. Pilot Valve G 90 (Page 7)
| Item | Part No. | Description | Qty |
| 5.2 | 102670 | Pilot valve (incl. parts 505-506) |
1 51
|
| 505 | 901186 | O-ring (D10) |
1 52
|
| 506 | 901187 | Usit-ring (D18) |
1 53
|
4. Main Valve G 90 (Page 8)
| Item | Part No. | Description | Qty |
| 17 | 103882 | Main valve bushing |
1 54
|
| 18 | 102794 | Main spool |
1 55
|
| 19 | 102795 | Spool |
1 56
|
| 20 | 102796 | Spool |
1 57
|
| 21 | 101826 | Cover |
1 58
|
| 22 | 30295 | Cover |
1 59
|
| 49 | 902644 | Seal (D125) |
6 60
|
| 51 | 90032 | O-ring (D120) |
2 61
|
| 58 | 90569 | Hex. screw (M20x50-8.8 DIN 933) |
12 62
|
| 60 | 91010 | Lock washer (M20 NORD-LOCK) |
12 63
|
5. Check Valve G 90 (Page 9)
| Item | Part No. | Description | Qty |
| 3 | 300943 | Check valve (incl. parts 301-306, 57 and 59) |
1 64
|
| 301 | 300933 | Check valve housing |
1 65
|
| 302 | 90432 | Check valve |
1 66
|
| 303 | 90310 | Spring ring (B38 DIN 7993) |
1 67
|
| 304 | 90403 | Flange plug (R1/4) |
1 68
|
| 305 | 90031 | O-ring (D46) |
1 69
|
| 306 | 90007 | O-ring (D44) |
1 70
|
| 57 | 90517 | Hex. screw (M16x35-8.8 DIN 933) |
4 71
|
| 59 | 90597 | Lock washer (M16 NORD-LOCK) |
4 72
|
6. Pressure Control Valve G 90 (Pages 11, 12 – with illegible text)
The table on page 11 contains many illegible characters in the Item, Part No., Specification, and Qty columns. I will list the parts where the Part No. and Qty are clearly readable. The description is also partially translated due to the illegible characters.
| Item | Part No. | Description | Qty |
| … (6. Pressure Control Valve G 90) | … | … (incl. parts 201-210) | 1 |
| 202 | 102661 |
Valve housing 73
|
1 74
|
| 205 | 300655 |
Spool 75
|
1 76
|
| 206 | 300652 |
Spool 77
|
1 78
|
| 207 | 300651 |
Spring guide 79
|
1 80
|
| 208 | 90030 |
O-ring (D44) 81
|
1 82
|
| 210 | 102790 |
Shim plate 83
|
1 84
|
| 57 | 90517 |
Hex. screw (M16x35-8.8 DIN 933) 85
|
4 86
|
| 59 | 90597 |
Lock washer (M16 NORD-LOCK) 87
|
4 88
|
7. Pressure Sequence Valve G 90 (Pages 12, 13 – with illegible text)
The text on page 12 and 13 is highly illegible, but some parts can be identified.
| Item | Part No. | Description | Qty |
| … (7. Pressure Sequence Valve G 90) | … | … (incl. parts 301-314, 51 and 52) | 1 |
| 301 | 102859 |
Valve housing 89
|
1 90
|
| 302 | 102130 |
Spool 91
|
1 92
|
| 303 | 101487 |
Spool 93
|
1 94
|
| 304 | 103310 |
Spring housing 95
|
1 96
|
| 305 | 103312 |
Spring guide 97
|
1 98
|
| 307 | 101340 |
Spring guide 99
|
1 100
|
| 308 | 90424 |
Flange plug (R1/2) 101
|
1 102
|
| 309 | 90030 |
O-ring (D44) 103
|
1 104
|
| 310 | 103315 |
Shim plate 105
|
3 106
|
| 311 | 90515 |
Hex. socket screw (M12x20-12.9 DIN 912) 107
|
4 108
|
| 312 | 91012 |
Lock washer (M12 NORD-LOCK) 109
|
4 110
|
| 313 | 910410 |
O-ring (D38) 111
|
1 112
|
| 314 | 101566 |
Nipple 113
|
2 114
|
| 315 | 90423 |
Flange plug (R1/4) 115
|
2 116
|
| 52 | 900506 |
O-ring (D16) 117
|
4 118
|
| 57 | 90515 |
Hex. socket screw (M12x30-12.9 DIN 912) 119
|
4 120
|
| 59 | 91012 |
Lock washer (M12 NORD-LOCK) 121
|
4 122
|
8. Tie Rods G 90 (Page 15)
| Item | Part No. | Description | Qty |
| 13 | 103484 | Tie rod |
4 123
|
| 14 | 103489 | Tie rod nut |
4 124
|
| 25 | 101442 | Lock plate |
4 125
|
| 29 | 304564 | Buffer ring |
4 126
|
9. Body Parts G 90 TUNNEL (Page 17)
| Item | Part No. | Description | Qty |
| 9 | 110106 | Cylinder |
1 127
|
| 10 | 102852 | Piston |
1 128
|
| 11 | 110500 | Seal carrier (incl. parts 33, 34, and 38) |
1 129
|
| 12 | 104036 | Valve body (incl. parts 33, 34, 37, 38, 39 and 52) |
1 130
|
| 31 | 300660 | Breather |
1 131
|
| 32 | 101400 | Breather (incl. part 32.2) |
1 132
|
| 32.2 | 900438 | O-ring (D26) |
1 133
|
| 33 | 90402 | Flange plug (R1/8) |
4 134
|
| 34 | 90444 | Flange plug (R3/8) |
2 135
|
| 35 | 90424 | Flange plug (R1/2) |
2 136
|
| 36 | 90410 | Flange plug (R1) |
2 137
|
| 43 | 904502 | Wiper (D125) |
1 138
|
| 44 | 906042 | Seal (D125) |
1 139
|
| 45 | 301149 | Seal (D120) |
1 140
|
| 46 | 301150 | Wiper (D120) |
1 141
|
| 47 | 90003 | O-ring (D124) |
2 142
|
| 48 | 90012 | O-ring (D9) |
4 143
|
| 49 | 902662 | Seal (D120) |
2 144
|
| 53 | 101445 | Seal (D180) |
2 145
|
| 54 | 301140 | Seal (D123) |
1 146
|
| 55 | 90348 | Parallel pin (12x5x20 DIN 7343) |
3 147
|
| 56 | 110106 | Seal carrier |
1 148
|
| 58 | 90011 | O-ring (D15) |
1 149
|
| 62 | 305459 | Plug |
1 150
|
10. Front Head G 90 TUNNEL (Page 18)
| Item | Part No. | Description | Qty |
| 5 | 110323 | Front head (incl. parts 43 and 44) |
1 151
|
| 8 | 102476 | Upper tool bushing |
1 152
|
| 9 | 102480 | Thrust ring |
1 153
|
| 16 | 101469 | Tool retaining pin |
1 154
|
| 23 | 301100 | Wedge |
1 155
|
| 26 | 110395 | Retaining pin |
1 156
|
| 27 | 103264 | Plug |
2 157
|
| 45 | 110399 | Plug |
4 158
|
| 46 | 110401 | Plug |
2 159
|
| 47 | 90003 | O-ring (D124) |
1 160
|
| 50 | 90000 | O-ring (D125) |
1 161
|
| 66 | 902250 | Spring ring (D120 DIN 472) |
1 162
|
11. Lower Tool Bushing G 90 (Page 19)
| Item | Part No. | Description | Qty |
| 14 | 103131 | Lower tool bushing (incl. part 14.1) |
1 163
|
| 14.1 | 102322 | Seal |
1 164
|
12. Seal Set G 90 TUNNEL (Page 20)
| Item | Part No. | Description | Qty |
| Kit | 106646 | Seal set (incl. parts 1-27) |
1 165
|
| 1 | 900438 | O-ring |
1 166
|
| 2 | 904502 | Wiper (D125) |
1 167
|
| 3 | 906042 | Seal (D125) |
1 168
|
| 4 | 110311 | Seal (D120) |
1 169
|
| 5 | 902662 | Seal (D120) |
2 170
|
| 6 | 301150 | Wiper (D120) |
1 171
|
| 7 | 90003 | O-ring (D124) |
3 172
|
| 8 | 90012 | O-ring (D9) |
4 173
|
| 9 | 90011 | O-ring (D15) |
1 174
|
| 10 | 110358 | Seal |
1 175
|
| 11 | 902588 | Seal (D125) |
6 176
|
| 12 | 90000 | O-ring (D125) |
1 177
|
| 13 | 90030 | O-ring (D44) |
2 178
|
| 14 | 910410 | O-ring (D38) |
4 179
|
| 15 | 101445 | Seal (D180) |
2 180
|
| 16 | 301140 | Seal (D123) |
1 181
|
| 17 | 302345 | Seal (D123) |
1 182
|
| 18 | 90056 | Usit-ring (D9) |
1 183
|
| 20 | 90032 | O-ring (D120) |
1 184
|
| 21 | 302485 | Seal (D99) |
1 185
|
| 22 | 90031 | O-ring (D46) |
1 186
|
| 23 | 90007 | O-ring (D44) |
1 187
|
| 24 | 91040 | O-ring (D38) |
1 188
|
| 25 | 90043 | O-ring (D19) |
1 189
|
| 26 | 90046 | Usit-ring (D28) |
1 190
|
| 27 | 301149 | Seal (D120) |
1 191 |
